Issue #698 - nb nb_device_active_for_boiler don't work for climate without hvac_action

With tests and list of active
Add attribute with active underlyings for easier tracking and setup (#658 )
2024-12-21 16:09:49 +00:00 · 2024-12-21 15:39:05 +00:00 · 2024-12-21 09:36:46 +01:00 · 2024-12-21 08:28:13 +00:00 · 2024-12-20 08:41:16 +01:00 · 2024-12-14 11:56:36 +01:00
253 changed files with 21171 additions and 6231 deletions
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,2 @@
+FROM mcr.microsoft.com/devcontainers/python:1-3.12
+RUN apt update && apt install -y ffmpeg
--- a/.devcontainer/configuration.yaml
+++ b/.devcontainer/configuration.yaml
@@ -1,14 +1,30 @@
 default_config:

-# ffmeg
-ffmpeg:
+recorder:
+    auto_purge: true
+    purge_keep_days: 1
+    commit_interval: 5
+    include:
+        domains:
+            - input_boolean
+            - input_number
+            - switch
+            - climate
+            - sensor
+            - binary_sensor
+            - number
+            - input_select
+            - versatile_thermostat

 logger:
-    default: info
+    default: warning
    logs:
        custom_components.versatile_thermostat: debug
-        custom_components.versatile_thermostat.underlyings: debug
-        custom_components.versatile_thermostat.climate: debug
+        # custom_components.versatile_thermostat.underlyings: info
+        # custom_components.versatile_thermostat.climate: info
+        # custom_components.versatile_thermostat.base_thermostat: debug
+        custom_components.versatile_thermostat.sensor: info
+        custom_components.versatile_thermostat.binary_sensor: info

 # If you need to debug uncommment the line below (doc: https://www.home-assistant.io/integrations/debugpy/)
 debugpy:
@@ -75,6 +91,48 @@ input_number:
        icon: mdi:thermostat
        unit_of_measurement: °C
        mode: box
+    fake_offset_calibration1:
+        name: Sonoff offset calibration 1
+        min: -12
+        max: 12
+        icon: mdi:tune
+        unit_of_measurement: °C
+        mode: box
+    fake_opening_degree1:
+        name: Sonoff Opening degree 1
+        min: 0
+        max: 100
+        icon: mdi:valve-open
+        unit_of_measurement: "%"
+        mode: box
+    fake_closing_degree1:
+        name: Sonoff Closing degree 1
+        min: 0
+        max: 100
+        icon: mdi:valve-closed
+        unit_of_measurement: "%"
+        mode: box
+    fake_offset_calibration2:
+        name: Sonoff offset calibration 2
+        min: -12
+        max: 12
+        icon: mdi:tune
+        unit_of_measurement: °C
+        mode: box
+    fake_opening_degree2:
+        name: Sonoff Opening degree 2
+        min: 0
+        max: 100
+        icon: mdi:valve-open
+        unit_of_measurement: "%"
+        mode: box
+    fake_closing_degree2:
+        name: Sonoff Closing degree 2
+        min: 0
+        max: 100
+        icon: mdi:valve-closed
+        unit_of_measurement: "%"
+        mode: box

 input_boolean:
    # input_boolean to simulate the windows entity. Only for development environment.
@@ -126,6 +184,12 @@ input_boolean:
    fake_presence_sensor1:
        name: Presence Sensor 1
        icon: mdi:home
+    fake_valve_sonoff_trvzb1:
+        name: Valve Sonoff TRVZB1
+        icon: mdi:valve
+    fake_valve_sonoff_trvzb2:
+        name: Valve Sonoff TRVZB2
+        icon: mdi:valve

 climate:
    - platform: generic_thermostat
@@ -136,6 +200,7 @@ climate:
      name: Underlying thermostat2
      heater: input_boolean.fake_heater_switch3
      target_sensor: input_number.fake_temperature_sensor1
+      ac_mode: false
    - platform: generic_thermostat
      name: Underlying thermostat3
      heater: input_boolean.fake_heater_switch3
@@ -168,17 +233,23 @@ climate:
      name: Underlying thermostat9
      heater: input_boolean.fake_heater_switch3
      target_sensor: input_number.fake_temperature_sensor1
+    - platform: generic_thermostat
+      name: Underlying Sonoff TRVZB1
+      heater: input_boolean.fake_valve_sonoff_trvzb1
+      target_sensor: input_number.fake_temperature_sensor1
+      ac_mode: false
+    - platform: generic_thermostat
+      name: Underlying Sonoff TRVZB2
+      heater: input_boolean.fake_valve_sonoff_trvzb2
+      target_sensor: input_number.fake_temperature_sensor1
+      ac_mode: false

-recorder:
-    commit_interval: 1
-    include:
-        domains:
-            - input_boolean
-            - input_number
-            - switch
-            - climate
-            - sensor
-            - binary_sensor
+input_datetime:
+    fake_last_seen:
+        name: Last seen temp sensor
+        icon: mdi:update
+        has_date: true
+        has_time: true

 template:
    - binary_sensor:
@@ -225,14 +296,14 @@ switch:
              friendly_name: "Pilote chauffage SDB RDC"
              value_template: "{{ is_state_attr('switch_seche_serviettes_sdb_rdc', 'sensor_state', 'on') }}"
              turn_on:
-                  service: select.select_option
+                  action: select.select_option
                  data:
                      option: comfort
                  target:
                      entity_id: select.seche_serviettes_sdb_rdc_cable_outlet_mode

              turn_off:
-                  service: select.select_option
+                  action: select.select_option
                  data:
                      option: comfort-2
                  target:
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,7 +1,9 @@
 // See https://aka.ms/vscode-remote/devcontainer.json for format details.
 // "image": "ghcr.io/ludeeus/devcontainer/integration:latest",
 {
-	"image": "mcr.microsoft.com/devcontainers/python:1-3.11-bullseye",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
 	"name": "Versatile Thermostat integration",
 	"appPort": [
 		"8123:8123"
@@ -9,29 +11,34 @@
 	// "postCreateCommand": "container install",
 	"postCreateCommand": "./container dev-setup",

-	"mounts": [
-		"source=${localEnv:HOME}/.ssh,target=/home/vscode/.ssh,type=bind,consistency=cached",
-		// uncomment this to get the versatile-thermostat-ui-card
-		"source=${localEnv:HOME}/SugarSync/Projets/home-assistant/versatile-thermostat-ui-card/dist,target=/workspaces/versatile_thermostat/config/www/community/versatile-thermostat-ui-card,type=bind,consistency=cached"
-	],
+    "mounts": [
+        "source=${localEnv:HOME}/.ssh,target=/home/vscode/.ssh,type=bind,consistency=cached",
+        // uncomment this to get the versatile-thermostat-ui-card
+        "source=${localEnv:HOME}/SugarSync/Projets/home-assistant/versatile-thermostat-ui-card/dist,target=/workspaces/versatile_thermostat/config/www/community/versatile-thermostat-ui-card,type=bind,consistency=cached"
+    ],

 	"customizations": {
 		"vscode": {
 			"extensions": [
 				"ms-python.python",
+				"ms-python.pylint",
+				// Doesn't work (crash). Default in python is to use Jedi see Settings / Python / Default Language
+				// "ms-python.vscode-pylance",
+				"ms-python.isort",
+				"ms-python.black-formatter",
+				"visualstudioexptteam.vscodeintellicode",
+				"redhat.vscode-yaml",
 				"github.vscode-pull-request-github",
 				"ryanluker.vscode-coverage-gutters",
-				"ms-python.black-formatter",
-				"ms-python.pylint",
 				"ferrierbenjamin.fold-unfold-all-icone",
-				"ms-python.isort",
 				"LittleFoxTeam.vscode-python-test-adapter",
 				"donjayamanne.githistory",
 				"waderyan.gitblame",
 				"keesschollaart.vscode-home-assistant",
 				"vscode.markdown-math",
 				"yzhang.markdown-all-in-one",
-				"github.vscode-github-actions"
+				"github.vscode-github-actions",
+				"azuretools.vscode-docker"
 			],
 			"settings": {
 				"files.eol": "\n",
@@ -52,10 +59,10 @@
 				"editor.formatOnPaste": false,
 				"editor.formatOnSave": true,
 				"editor.formatOnType": true,
-				"files.trimTrailingWhitespace": true,
-				"python.experiments.optOutFrom": ["pythonTestAdapter"],
-    			"python.analysis.logLevel": "Trace"
+				"files.trimTrailingWhitespace": true
+				// "python.experiments.optOutFrom": ["pythonTestAdapter"],
+    			// "python.analysis.logLevel": "Trace"
 			}
 		}
 	}
-}
+}
--- a/.github/ISSUE_TEMPLATE/issue.md
+++ b/.github/ISSUE_TEMPLATE/issue.md
@@ -4,6 +4,8 @@ about: Create a report to help us improve

 ---

+> Please read carefuly this instructions and fill this form before writing an issue. It helps me to help you.
+
 <!-- This template will allow the maintainer to be efficient and post the more accurante response as possible. There is many types / modes / configuration possible, so the analysis can be very tricky. If don't follow this template, your issue could be rejected without any message. Please help me to help you. -->

 <!-- Before you open a new issue, search through the existing issues to see if others have had the same problem.
--- a/.github/workflows/testus.yaml
+++ b/.github/workflows/testus.yaml
@@ -17,7 +17,7 @@ jobs:
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
-          python-version: 3.11
+          python-version: 3.12

      - name: Install dependencies
        run: |
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -1,18 +1,14 @@
 {
-  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": "Home Assistant (debug)",
-      "type": "python",
-      "request": "launch",
-      "module": "homeassistant",
-      "justMyCode": false,
-      "args": [
-          "--debug",
-          "-c",
-          "config"
-      ]
-    }
-  ]
-}
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Home Assistant (debug)",
+            "type": "debugpy",
+            "request": "launch",
+            "module": "homeassistant",
+            "justMyCode": false,
+            "args": ["--debug", "-c", "config"]
+        }
+    ]
+}
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,21 +1,18 @@
 {
    "[python]": {
        "editor.defaultFormatter": "ms-python.black-formatter",
-        "editor.formatOnSave": true
+        "editor.formatOnSave": true,
+        "editor.formatOnSaveMode": "modifications"
    },
-    "pylint.lintOnChange": false,
    "files.associations": {
        "*.yaml": "home-assistant"
    },
-    "python.testing.pytestArgs": [
-        "tests"
-    ],
+    "python.testing.pytestArgs": [],
    "python.testing.unittestEnabled": false,
    "python.testing.pytestEnabled": true,
    "python.analysis.extraPaths": [
    //    "/home/vscode/core",
        "/workspaces/versatile_thermostat/custom_components/versatile_thermostat",
-        "/home/vscode/.local/lib/python3.11/site-packages/homeassistant"
-    ],
-    "python.formatting.provider": "none"
+        "/home/vscode/.local/lib/python3.12/site-packages/homeassistant"
+    ]
 }
--- a/README-fr.md
+++ b/README-fr.md
--- a/README.md
+++ b/README.md
--- a/custom_components/versatile_thermostat/init.py
+++ b/custom_components/versatile_thermostat/init.py
@@ -1,4 +1,5 @@
 """The Versatile Thermostat integration."""
+
 from __future__ import annotations

 from typing import Dict
@@ -8,16 +9,19 @@ import logging
 import voluptuous as vol
 import homeassistant.helpers.config_validation as cv

-from homeassistant.const import SERVICE_RELOAD
+from homeassistant.const import SERVICE_RELOAD, EVENT_HOMEASSISTANT_STARTED

 from homeassistant.config_entries import ConfigEntry, ConfigType
-from homeassistant.core import HomeAssistant
+from homeassistant.core import HomeAssistant, CoreState, callback
+from homeassistant.helpers.service import async_register_admin_service

 from .base_thermostat import BaseThermostat

 from .const import (
    DOMAIN,
    PLATFORMS,
+    CONFIG_VERSION,
+    CONFIG_MINOR_VERSION,
    CONF_AUTO_REGULATION_LIGHT,
    CONF_AUTO_REGULATION_MEDIUM,
    CONF_AUTO_REGULATION_STRONG,
@@ -27,6 +31,30 @@ from .const import (
    CONF_SAFETY_MODE,
    CONF_THERMOSTAT_CENTRAL_CONFIG,
    CONF_THERMOSTAT_TYPE,
+    CONF_USE_WINDOW_FEATURE,
+    CONF_USE_MOTION_FEATURE,
+    CONF_USE_PRESENCE_FEATURE,
+    CONF_USE_POWER_FEATURE,
+    CONF_USE_CENTRAL_BOILER_FEATURE,
+    CONF_POWER_SENSOR,
+    CONF_PRESENCE_SENSOR,
+    CONF_UNDERLYING_LIST,
+    CONF_HEATER,
+    CONF_HEATER_2,
+    CONF_HEATER_3,
+    CONF_HEATER_4,
+    CONF_CLIMATE,
+    CONF_CLIMATE_2,
+    CONF_CLIMATE_3,
+    CONF_CLIMATE_4,
+    CONF_VALVE,
+    CONF_VALVE_2,
+    CONF_VALVE_3,
+    CONF_VALVE_4,
+    CONF_THERMOSTAT_SWITCH,
+    CONF_THERMOSTAT_CLIMATE,
+    CONF_THERMOSTAT_VALVE,
+    CONF_MAX_ON_PERCENT,
 )

 from .vtherm_api import VersatileThermostatAPI
@@ -59,6 +87,7 @@ CONFIG_SCHEMA = vol.Schema(
                CONF_AUTO_REGULATION_EXPERT: vol.Schema(SELF_REGULATION_PARAM_SCHEMA),
                CONF_SHORT_EMA_PARAMS: vol.Schema(EMA_PARAM_SCHEMA),
                CONF_SAFETY_MODE: vol.Schema(SAFETY_MODE_PARAM_SCHEMA),
+                vol.Optional(CONF_MAX_ON_PERCENT): vol.Coerce(float),
            }
        ),
    },
@@ -82,16 +111,31 @@ async def async_setup(

    hass.data.setdefault(DOMAIN, {})

+    api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(hass)
    # L'argument config contient votre fichier configuration.yaml
    vtherm_config = config.get(DOMAIN)
-
    if vtherm_config is not None:
-        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(hass)
        api.set_global_config(vtherm_config)
    else:
        _LOGGER.info("No global config from configuration.yaml available")

-    hass.helpers.service.async_register_admin_service(
+    # Listen HA starts to initialize all links between
+    @callback
+    async def _async_startup_internal(*_):
+        _LOGGER.info(
+            "VersatileThermostat - HA is started, initialize all links between VTherm entities"
+        )
+        await api.init_vtherm_links()
+        await api.notify_central_mode_change()
+        await api.reload_central_boiler_entities_list()
+
+    if hass.state == CoreState.running:
+        await _async_startup_internal()
+    else:
+        hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STARTED, _async_startup_internal)
+
+    async_register_admin_service(
+        hass,
        DOMAIN,
        SERVICE_RELOAD,
        _handle_reload,
@@ -114,6 +158,7 @@ async def reload_all_vtherm(hass):
    api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(hass)
    if api:
        await api.reload_central_boiler_entities_list()
+        await api.init_vtherm_links()


 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
@@ -133,13 +178,22 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:

    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)

-    await api.reload_central_boiler_entities_list()
+    if hass.state == CoreState.running:
+        await api.reload_central_boiler_entities_list()
+        await api.init_vtherm_links(entry.entry_id)

    return True


 async def update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
    """Update listener."""
+
+    _LOGGER.debug(
+        "Calling update_listener entry: entry_id='%s', value='%s'",
+        entry.entry_id,
+        entry.data,
+    )
+
    if entry.data.get(CONF_THERMOSTAT_TYPE) == CONF_THERMOSTAT_CENTRAL_CONFIG:
        await reload_all_vtherm(hass)
    else:
@@ -148,6 +202,7 @@ async def update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(hass)
        if api is not None:
            await api.reload_central_boiler_entities_list()
+            await api.init_vtherm_links(entry.entry_id)


 async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
@@ -165,15 +220,83 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 # Example migration function
 async def async_migrate_entry(hass: HomeAssistant, config_entry: ConfigEntry):
    """Migrate old entry."""
-    _LOGGER.debug("Migrating from version %s", config_entry.version)
+    _LOGGER.debug(
+        "Migrating from version %s/%s", config_entry.version, config_entry.minor_version
+    )

-    if config_entry.version == 1:
+    if (
+        config_entry.version != CONFIG_VERSION
+        or config_entry.minor_version != CONFIG_MINOR_VERSION
+    ):
+        _LOGGER.debug(
+            "Migration to %s/%s is needed", CONFIG_VERSION, CONFIG_MINOR_VERSION
+        )
        new = {**config_entry.data}
-        # TO DO: modify Config Entry data if there will be something to migrate

-        config_entry.version = 2
-        hass.config_entries.async_update_entry(config_entry, data=new)
+        thermostat_type = config_entry.data.get(CONF_THERMOSTAT_TYPE)

-    _LOGGER.info("Migration to version %s successful", config_entry.version)
+        if thermostat_type == CONF_THERMOSTAT_CENTRAL_CONFIG:
+            new[CONF_USE_WINDOW_FEATURE] = True
+            new[CONF_USE_MOTION_FEATURE] = True
+            new[CONF_USE_POWER_FEATURE] = new.get(CONF_POWER_SENSOR, None) is not None
+            new[CONF_USE_PRESENCE_FEATURE] = (
+                new.get(CONF_PRESENCE_SENSOR, None) is not None
+            )
+
+            new[CONF_USE_CENTRAL_BOILER_FEATURE] = new.get(
+                "add_central_boiler_control", False
+            ) or new.get(CONF_USE_CENTRAL_BOILER_FEATURE, False)
+
+        if config_entry.data.get(CONF_UNDERLYING_LIST, None) is None:
+            underlying_list = []
+            if thermostat_type == CONF_THERMOSTAT_SWITCH:
+                underlying_list = [
+                    config_entry.data.get(CONF_HEATER, None),
+                    config_entry.data.get(CONF_HEATER_2, None),
+                    config_entry.data.get(CONF_HEATER_3, None),
+                    config_entry.data.get(CONF_HEATER_4, None),
+                ]
+            elif thermostat_type == CONF_THERMOSTAT_CLIMATE:
+                underlying_list = [
+                    config_entry.data.get(CONF_CLIMATE, None),
+                    config_entry.data.get(CONF_CLIMATE_2, None),
+                    config_entry.data.get(CONF_CLIMATE_3, None),
+                    config_entry.data.get(CONF_CLIMATE_4, None),
+                ]
+            elif thermostat_type == CONF_THERMOSTAT_VALVE:
+                underlying_list = [
+                    config_entry.data.get(CONF_VALVE, None),
+                    config_entry.data.get(CONF_VALVE_2, None),
+                    config_entry.data.get(CONF_VALVE_3, None),
+                    config_entry.data.get(CONF_VALVE_4, None),
+                ]
+
+            new[CONF_UNDERLYING_LIST] = [
+                entity for entity in underlying_list if entity is not None
+            ]
+
+            for key in [
+                CONF_HEATER,
+                CONF_HEATER_2,
+                CONF_HEATER_3,
+                CONF_HEATER_4,
+                CONF_CLIMATE,
+                CONF_CLIMATE_2,
+                CONF_CLIMATE_3,
+                CONF_CLIMATE_4,
+                CONF_VALVE,
+                CONF_VALVE_2,
+                CONF_VALVE_3,
+                CONF_VALVE_4,
+            ]:
+                new.pop(key, None)
+
+        hass.config_entries.async_update_entry(
+            config_entry,
+            data=new,
+            version=CONFIG_VERSION,
+            minor_version=CONFIG_MINOR_VERSION,
+        )
+        _LOGGER.info("Migration to version %s successful", config_entry.version)

    return True
--- a/custom_components/versatile_thermostat/auto_start_stop_algorithm.py
+++ b/custom_components/versatile_thermostat/auto_start_stop_algorithm.py
@@ -0,0 +1,266 @@
+# pylint: disable=line-too-long
+""" This file implements the Auto start/stop algorithm as described here: https://github.com/jmcollin78/versatile_thermostat/issues/585
+"""
+
+import logging
+from datetime import datetime
+from typing import Literal
+
+from homeassistant.components.climate import HVACMode
+
+from .const import (
+    AUTO_START_STOP_LEVEL_NONE,
+    AUTO_START_STOP_LEVEL_FAST,
+    AUTO_START_STOP_LEVEL_MEDIUM,
+    AUTO_START_STOP_LEVEL_SLOW,
+    TYPE_AUTO_START_STOP_LEVELS,
+)
+
+
+_LOGGER = logging.getLogger(__name__)
+
+# Some constant to make algorithm depending of level
+DT_MIN = {
+    AUTO_START_STOP_LEVEL_NONE: 0,  # Not used
+    AUTO_START_STOP_LEVEL_SLOW: 30,
+    AUTO_START_STOP_LEVEL_MEDIUM: 15,
+    AUTO_START_STOP_LEVEL_FAST: 7,
+}
+
+# the measurement cycle (2 min)
+CYCLE_SEC = 120
+
+# A temp hysteresis to avoid rapid OFF/ON
+TEMP_HYSTERESIS = 0.5
+
+ERROR_THRESHOLD = {
+    AUTO_START_STOP_LEVEL_NONE: 0,  # Not used
+    AUTO_START_STOP_LEVEL_SLOW: 10,  # 10 cycle above 1° or 5 cycle above 2°, ...
+    AUTO_START_STOP_LEVEL_MEDIUM: 5,  # 5 cycle above 1° or 3 cycle above 2°, ..., 1 cycle above 5°
+    AUTO_START_STOP_LEVEL_FAST: 2,  # 2 cycle above 1° or 1 cycle above 2°
+}
+
+AUTO_START_STOP_ACTION_OFF = "turnOff"
+AUTO_START_STOP_ACTION_ON = "turnOn"
+AUTO_START_STOP_ACTION_NOTHING = "nothing"
+AUTO_START_STOP_ACTIONS = Literal[  # pylint: disable=invalid-name
+    AUTO_START_STOP_ACTION_OFF,
+    AUTO_START_STOP_ACTION_ON,
+    AUTO_START_STOP_ACTION_NOTHING,
+]
+
+class AutoStartStopDetectionAlgorithm:
+    """The class that implements the algorithm listed above"""
+
+    _dt: float | None = None
+    _level: str = AUTO_START_STOP_LEVEL_NONE
+    _accumulated_error: float = 0
+    _error_threshold: float | None = None
+    _last_calculation_date: datetime | None = None
+    _last_switch_date: datetime | None = None
+
+    def __init__(self, level: TYPE_AUTO_START_STOP_LEVELS, vtherm_name) -> None:
+        """Initalize a new algorithm with the right constants"""
+        self._vtherm_name = vtherm_name
+        self._last_calculation_date = None
+        self._last_switch_date = None
+        self._init_level(level)
+
+    def _init_level(self, level: TYPE_AUTO_START_STOP_LEVELS):
+        """Initialize a new level"""
+        if level == self._level:
+            return
+
+        self._level = level
+        if self._level != AUTO_START_STOP_LEVEL_NONE:
+            self._dt = DT_MIN[level]
+            self._error_threshold = ERROR_THRESHOLD[level]
+            # reset accumulated error if we change the level
+            self._accumulated_error = 0
+
+    def calculate_action(
+        self,
+        hvac_mode: HVACMode | None,
+        saved_hvac_mode: HVACMode | None,
+        target_temp: float,
+        current_temp: float,
+        slope_min: float | None,
+        now: datetime,
+    ) -> AUTO_START_STOP_ACTIONS:
+        """Calculate an eventual action to do depending of the value in parameter"""
+        if self._level == AUTO_START_STOP_LEVEL_NONE:
+            _LOGGER.debug(
+                "%s - auto-start/stop is disabled",
+                self,
+            )
+            return AUTO_START_STOP_ACTION_NOTHING
+
+        _LOGGER.debug(
+            "%s - calculate_action: hvac_mode=%s, saved_hvac_mode=%s, target_temp=%s, current_temp=%s, slope_min=%s at %s",
+            self,
+            hvac_mode,
+            saved_hvac_mode,
+            target_temp,
+            current_temp,
+            slope_min,
+            now,
+        )
+
+        if hvac_mode is None or target_temp is None or current_temp is None:
+            _LOGGER.debug(
+                "%s - No all mandatory parameters are set. Disable auto-start/stop",
+                self,
+            )
+            return AUTO_START_STOP_ACTION_NOTHING
+
+        # Calculate the error factor (P)
+        error = target_temp - current_temp
+
+        # reduce the error considering the dt between the last measurement
+        if self._last_calculation_date is not None:
+            dtmin = (now - self._last_calculation_date).total_seconds() / CYCLE_SEC
+            # ignore two calls too near (< 24 sec)
+            if dtmin <= 0.2:
+                _LOGGER.debug(
+                    "%s - new calculation of auto_start_stop (%s) is too near of the last one (%s). Forget it",
+                    self,
+                    now,
+                    self._last_calculation_date,
+                )
+                return AUTO_START_STOP_ACTION_NOTHING
+            error = error * dtmin
+
+        # If the error have change its sign, reset smoothly the accumulated error
+        if error * self._accumulated_error < 0:
+            self._accumulated_error = self._accumulated_error / 2.0
+
+        self._accumulated_error += error
+
+        # Capping of the error
+        self._accumulated_error = min(
+            self._error_threshold,
+            max(-self._error_threshold, self._accumulated_error),
+        )
+
+        self._last_calculation_date = now
+
+        temp_at_dt = current_temp + slope_min * self._dt
+
+        # Calculate the number of minute from last_switch
+        nb_minutes_since_last_switch = 999
+        if self._last_switch_date is not None:
+            nb_minutes_since_last_switch = (
+                now - self._last_switch_date
+            ).total_seconds() / 60
+
+        # Check to turn-off
+        # When we hit the threshold, that mean we can turn off
+        if hvac_mode == HVACMode.HEAT:
+            if (
+                self._accumulated_error <= -self._error_threshold
+                and temp_at_dt >= target_temp + TEMP_HYSTERESIS
+                and nb_minutes_since_last_switch >= self._dt
+            ):
+                _LOGGER.info(
+                    "%s - We need to stop, there is no need for heating for a long time.",
+                    self,
+                )
+                self._last_switch_date = now
+                return AUTO_START_STOP_ACTION_OFF
+            else:
+                _LOGGER.debug("%s - nothing to do, we are heating", self)
+                return AUTO_START_STOP_ACTION_NOTHING
+
+        if hvac_mode == HVACMode.COOL:
+            if (
+                self._accumulated_error >= self._error_threshold
+                and temp_at_dt <= target_temp - TEMP_HYSTERESIS
+                and nb_minutes_since_last_switch >= self._dt
+            ):
+                _LOGGER.info(
+                    "%s - We need to stop, there is no need for cooling for a long time.",
+                    self,
+                )
+                self._last_switch_date = now
+                return AUTO_START_STOP_ACTION_OFF
+            else:
+                _LOGGER.debug(
+                    "%s - nothing to do, we are cooling",
+                    self,
+                )
+                return AUTO_START_STOP_ACTION_NOTHING
+
+        # check to turn on
+        if hvac_mode == HVACMode.OFF and saved_hvac_mode == HVACMode.HEAT:
+            if (
+                temp_at_dt <= target_temp - TEMP_HYSTERESIS
+                and nb_minutes_since_last_switch >= self._dt
+            ):
+                _LOGGER.info(
+                    "%s - We need to start, because it will be time to heat",
+                    self,
+                )
+                self._last_switch_date = now
+                return AUTO_START_STOP_ACTION_ON
+            else:
+                _LOGGER.debug(
+                    "%s - nothing to do, we don't need to heat soon",
+                    self,
+                )
+                return AUTO_START_STOP_ACTION_NOTHING
+
+        if hvac_mode == HVACMode.OFF and saved_hvac_mode == HVACMode.COOL:
+            if (
+                temp_at_dt >= target_temp + TEMP_HYSTERESIS
+                and nb_minutes_since_last_switch >= self._dt
+            ):
+                _LOGGER.info(
+                    "%s - We need to start, because it will be time to cool",
+                    self,
+                )
+                self._last_switch_date = now
+                return AUTO_START_STOP_ACTION_ON
+            else:
+                _LOGGER.debug(
+                    "%s - nothing to do, we don't need to cool soon",
+                    self,
+                )
+                return AUTO_START_STOP_ACTION_NOTHING
+
+        _LOGGER.debug(
+            "%s - nothing to do, no conditions applied",
+            self,
+        )
+        return AUTO_START_STOP_ACTION_NOTHING
+
+    def set_level(self, level: TYPE_AUTO_START_STOP_LEVELS):
+        """Set a new level"""
+        self._init_level(level)
+
+    @property
+    def dt_min(self) -> float:
+        """Get the dt value"""
+        return self._dt
+
+    @property
+    def accumulated_error(self) -> float:
+        """Get the accumulated error value"""
+        return self._accumulated_error
+
+    @property
+    def accumulated_error_threshold(self) -> float:
+        """Get the accumulated error threshold value"""
+        return self._error_threshold
+
+    @property
+    def level(self) -> TYPE_AUTO_START_STOP_LEVELS:
+        """Get the level value"""
+        return self._level
+
+    @property
+    def last_switch_date(self) -> datetime | None:
+        """Get the last of the last switch"""
+        return self._last_switch_date
+
+    def __str__(self) -> str:
+        return f"AutoStartStopDetectionAlgorithm-{self._vtherm_name}"
--- a/custom_components/versatile_thermostat/base_thermostat.py
+++ b/custom_components/versatile_thermostat/base_thermostat.py
--- a/custom_components/versatile_thermostat/binary_sensor.py
+++ b/custom_components/versatile_thermostat/binary_sensor.py
@@ -7,11 +7,11 @@ from homeassistant.core import (
    HomeAssistant,
    callback,
    Event,
-    CoreState,
+    # CoreState,
    HomeAssistantError,
 )

-from homeassistant.const import STATE_ON, STATE_OFF, EVENT_HOMEASSISTANT_START
+from homeassistant.const import STATE_ON, STATE_OFF  # , EVENT_HOMEASSISTANT_START

 from homeassistant.helpers.device_registry import DeviceInfo, DeviceEntryType
 from homeassistant.helpers.event import async_track_state_change_event
@@ -39,6 +39,7 @@ from .const import (
    CONF_USE_WINDOW_FEATURE,
    CONF_THERMOSTAT_TYPE,
    CONF_THERMOSTAT_CENTRAL_CONFIG,
+    CONF_USE_CENTRAL_BOILER_FEATURE,
    CONF_CENTRAL_BOILER_ACTIVATION_SRV,
    CONF_CENTRAL_BOILER_DEACTIVATION_SRV,
    overrides,
@@ -63,10 +64,13 @@ async def async_setup_entry(
    name = entry.data.get(CONF_NAME)
    vt_type = entry.data.get(CONF_THERMOSTAT_TYPE)

+    entities = None
+
    if vt_type == CONF_THERMOSTAT_CENTRAL_CONFIG:
-        entities = [
-            CentralBoilerBinarySensor(hass, unique_id, name, entry.data),
-        ]
+        if entry.data.get(CONF_USE_CENTRAL_BOILER_FEATURE):
+            entities = [
+                CentralBoilerBinarySensor(hass, unique_id, name, entry.data),
+            ]
    else:
        entities = [
            SecurityBinarySensor(hass, unique_id, name, entry.data),
@@ -81,7 +85,8 @@ async def async_setup_entry(
        if entry.data.get(CONF_USE_POWER_FEATURE):
            entities.append(OverpoweringBinarySensor(hass, unique_id, name, entry.data))

-    async_add_entities(entities, True)
+    if entities:
+        async_add_entities(entities, True)


 class SecurityBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
@@ -95,7 +100,7 @@ class SecurityBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
        entry_infos,
    ) -> None:
        """Initialize the SecurityState Binary sensor"""
-        super().__init__(hass, unique_id, entry_infos.get(CONF_NAME))
+        super().__init__(hass, unique_id, name)
        self._attr_name = "Security state"
        self._attr_unique_id = f"{self._device_name}_security_state"
        self._attr_is_on = False
@@ -103,7 +108,7 @@ class SecurityBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_is_on
        self._attr_is_on = self.my_climate.security_state is True
@@ -142,7 +147,7 @@ class OverpoweringBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_is_on
        self._attr_is_on = self.my_climate.overpowering_state is True
@@ -181,7 +186,7 @@ class WindowBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_is_on
        # Issue 120 - only take defined presence value
@@ -231,7 +236,7 @@ class MotionBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)
        old_state = self._attr_is_on
        # Issue 120 - only take defined presence value
        if self.my_climate.motion_state in [STATE_ON, STATE_OFF]:
@@ -272,7 +277,7 @@ class PresenceBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity):
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""

-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)
        old_state = self._attr_is_on
        # Issue 120 - only take defined presence value
        if self.my_climate.presence_state in [STATE_ON, STATE_OFF]:
@@ -312,7 +317,7 @@ class WindowByPassBinarySensor(VersatileThermostatBaseEntity, BinarySensorEntity
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)
        old_state = self._attr_is_on
        if self.my_climate.window_bypass_state in [True, False]:
            self._attr_is_on = self.my_climate.window_bypass_state
@@ -386,17 +391,18 @@ class CentralBoilerBinarySensor(BinarySensorEntity):
        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self._hass)
        api.register_central_boiler(self)

-        @callback
-        async def _async_startup_internal(*_):
-            _LOGGER.debug("%s - Calling async_startup_internal", self)
-            await self.listen_nb_active_vtherm_entity()
-
-        if self.hass.state == CoreState.running:
-            await _async_startup_internal()
-        else:
-            self.hass.bus.async_listen_once(
-                EVENT_HOMEASSISTANT_START, _async_startup_internal
-            )
+        # Should be not more needed and replaced by vtherm_api.init_vtherm_links
+        # @callback
+        # async def _async_startup_internal(*_):
+        #     _LOGGER.debug("%s - Calling async_startup_internal", self)
+        #     await self.listen_nb_active_vtherm_entity()
+    #
+    # if self.hass.state == CoreState.running:
+    #     await _async_startup_internal()
+    # else:
+    #     self.hass.bus.async_listen_once(
+    #         EVENT_HOMEASSISTANT_START, _async_startup_internal
+    #     )

    async def listen_nb_active_vtherm_entity(self):
        """Initialize the listening of state change of VTherms"""
--- a/custom_components/versatile_thermostat/climate.py
+++ b/custom_components/versatile_thermostat/climate.py
@@ -1,4 +1,5 @@
 """ Implements the VersatileThermostat climate component """
+
 import logging


@@ -21,32 +22,15 @@ from homeassistant.const import (
    STATE_NOT_HOME,
 )

-from .const import (
-    DOMAIN,
-    PLATFORMS,
-    CONF_PRESETS_WITH_AC,
-    SERVICE_SET_PRESENCE,
-    SERVICE_SET_PRESET_TEMPERATURE,
-    SERVICE_SET_SECURITY,
-    SERVICE_SET_WINDOW_BYPASS,
-    SERVICE_SET_AUTO_REGULATION_MODE,
-    SERVICE_SET_AUTO_FAN_MODE,
-    CONF_THERMOSTAT_TYPE,
-    CONF_THERMOSTAT_SWITCH,
-    CONF_THERMOSTAT_CLIMATE,
-    CONF_THERMOSTAT_VALVE,
-    CONF_THERMOSTAT_CENTRAL_CONFIG,
-)
+from .const import *  # pylint: disable=wildcard-import,unused-wildcard-import

 from .thermostat_switch import ThermostatOverSwitch
 from .thermostat_climate import ThermostatOverClimate
 from .thermostat_valve import ThermostatOverValve
+from .thermostat_climate_valve import ThermostatOverClimateValve

 _LOGGER = logging.getLogger(__name__)

-# _LOGGER.setLevel(logging.DEBUG)
-
-
 async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
@@ -62,6 +46,9 @@ async def async_setup_entry(
    unique_id = entry.entry_id
    name = entry.data.get(CONF_NAME)
    vt_type = entry.data.get(CONF_THERMOSTAT_TYPE)
+    have_valve_regulation = (
+        entry.data.get(CONF_AUTO_REGULATION_MODE) == CONF_AUTO_REGULATION_VALVE
+    )

    if vt_type == CONF_THERMOSTAT_CENTRAL_CONFIG:
        return
@@ -71,9 +58,19 @@ async def async_setup_entry(
    if vt_type == CONF_THERMOSTAT_SWITCH:
        entity = ThermostatOverSwitch(hass, unique_id, name, entry.data)
    elif vt_type == CONF_THERMOSTAT_CLIMATE:
-        entity = ThermostatOverClimate(hass, unique_id, name, entry.data)
+        if have_valve_regulation is True:
+            entity = ThermostatOverClimateValve(hass, unique_id, name, entry.data)
+        else:
+            entity = ThermostatOverClimate(hass, unique_id, name, entry.data)
    elif vt_type == CONF_THERMOSTAT_VALVE:
        entity = ThermostatOverValve(hass, unique_id, name, entry.data)
+    else:
+        _LOGGER.error(
+            "Cannot create Versatile Thermostat name=%s of type %s which is unknown",
+            name,
+            vt_type,
+        )
+        return

    async_add_entities([entity], True)

@@ -121,7 +118,7 @@ async def async_setup_entry(
        SERVICE_SET_AUTO_REGULATION_MODE,
        {
            vol.Required("auto_regulation_mode"): vol.In(
-                ["None", "Light", "Medium", "Strong", "Slow"]
+                ["None", "Light", "Medium", "Strong", "Slow", "Expert"]
            ),
        },
        "service_set_auto_regulation_mode",
--- a/custom_components/versatile_thermostat/commons.py
+++ b/custom_components/versatile_thermostat/commons.py
@@ -1,40 +1,22 @@
 """ Some usefull commons class """
+
 # pylint: disable=line-too-long

 import logging
-from datetime import timedelta, datetime
+from datetime import timedelta
 from homeassistant.core import HomeAssistant, callback, Event
 from homeassistant.components.climate import ClimateEntity, DOMAIN as CLIMATE_DOMAIN
 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.device_registry import DeviceInfo, DeviceEntryType
 from homeassistant.helpers.event import async_track_state_change_event, async_call_later
-from homeassistant.util import dt as dt_util
+

 from .base_thermostat import BaseThermostat
 from .const import DOMAIN, DEVICE_MANUFACTURER, ServiceConfigurationError

 _LOGGER = logging.getLogger(__name__)

-
-def get_tz(hass: HomeAssistant):
-    """Get the current timezone"""
-
-    return dt_util.get_time_zone(hass.config.time_zone)
-
-
-class NowClass:
-    """For testing purpose only"""
-
-    @staticmethod
-    def get_now(hass: HomeAssistant) -> datetime:
-        """A test function to get the now.
-        For testing purpose this method can be overriden to get a specific
-        timestamp.
-        """
-        return datetime.now(get_tz(hass))
-
-
 def round_to_nearest(n: float, x: float) -> float:
    """Round a number to the nearest x (which should be decimal but not null)
    Example:
@@ -182,6 +164,9 @@ class VersatileThermostatBaseEntity(Entity):
        """Returns my climate if found"""
        if not self._my_climate:
            self._my_climate = self.find_my_versatile_thermostat()
+            if self._my_climate:
+                # Only the first time
+                self.my_climate_is_initialized()
        return self._my_climate

    @property
@@ -231,13 +216,18 @@ class VersatileThermostatBaseEntity(Entity):
                    )
                )
            else:
-                _LOGGER.warning("%s - no entity to listen. Try later", self)
+                _LOGGER.debug("%s - no entity to listen. Try later", self)
                self._cancel_call = async_call_later(
                    self.hass, timedelta(seconds=1), try_find_climate
                )

        await try_find_climate(None)

+    @callback
+    def my_climate_is_initialized(self):
+        """Called when the associated climate is initialized"""
+        return
+
    @callback
    async def async_my_climate_changed(
        self, event: Event
--- a/custom_components/versatile_thermostat/config_flow.py
+++ b/custom_components/versatile_thermostat/config_flow.py
--- a/custom_components/versatile_thermostat/config_schema.py
+++ b/custom_components/versatile_thermostat/config_schema.py
@@ -16,6 +16,10 @@ from homeassistant.components.input_number import (
    DOMAIN as INPUT_NUMBER_DOMAIN,
 )

+from homeassistant.components.input_datetime import (
+    DOMAIN as INPUT_DATETIME_DOMAIN,
+)
+
 from homeassistant.components.person import DOMAIN as PERSON_DOMAIN
 from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN

@@ -42,15 +46,45 @@ STEP_MAIN_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
        vol.Required(CONF_TEMP_SENSOR): selector.EntitySelector(
            selector.EntitySelectorConfig(domain=[SENSOR_DOMAIN, INPUT_NUMBER_DOMAIN]),
        ),
+        vol.Optional(CONF_LAST_SEEN_TEMP_SENSOR): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[SENSOR_DOMAIN, INPUT_DATETIME_DOMAIN]
+            ),
+        ),
        vol.Required(CONF_CYCLE_MIN, default=5): cv.positive_int,
        vol.Optional(CONF_DEVICE_POWER, default="1"): vol.Coerce(float),
-        vol.Optional(CONF_USE_CENTRAL_MODE, default=True): cv.boolean,
        vol.Required(CONF_USE_MAIN_CENTRAL_CONFIG, default=True): cv.boolean,
+        vol.Optional(CONF_USE_CENTRAL_MODE, default=True): cv.boolean,
+        vol.Required(CONF_USED_BY_CENTRAL_BOILER, default=False): cv.boolean,
+    }
+)
+
+STEP_FEATURES_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
+    {
        vol.Optional(CONF_USE_WINDOW_FEATURE, default=False): cv.boolean,
        vol.Optional(CONF_USE_MOTION_FEATURE, default=False): cv.boolean,
        vol.Optional(CONF_USE_POWER_FEATURE, default=False): cv.boolean,
        vol.Optional(CONF_USE_PRESENCE_FEATURE, default=False): cv.boolean,
-        vol.Required(CONF_USED_BY_CENTRAL_BOILER, default=False): cv.boolean,
+    }
+)
+
+STEP_CLIMATE_FEATURES_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
+    {
+        vol.Optional(CONF_USE_WINDOW_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_MOTION_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_POWER_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_PRESENCE_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_AUTO_START_STOP_FEATURE, default=False): cv.boolean,
+    }
+)
+
+STEP_CENTRAL_FEATURES_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
+    {
+        vol.Optional(CONF_USE_WINDOW_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_MOTION_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_POWER_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_PRESENCE_FEATURE, default=False): cv.boolean,
+        vol.Optional(CONF_USE_CENTRAL_BOILER_FEATURE, default=False): cv.boolean,
    }
 )

@@ -62,7 +96,6 @@ STEP_CENTRAL_MAIN_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
        vol.Required(CONF_TEMP_MIN, default=7): vol.Coerce(float),
        vol.Required(CONF_TEMP_MAX, default=35): vol.Coerce(float),
        vol.Required(CONF_STEP_TEMPERATURE, default=0.1): vol.Coerce(float),
-        vol.Required(CONF_ADD_CENTRAL_BOILER_CONTROL, default=False): cv.boolean,
    }
 )

@@ -86,17 +119,10 @@ STEP_CENTRAL_BOILER_SCHEMA = vol.Schema(

 STEP_THERMOSTAT_SWITCH = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Required(CONF_HEATER): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[SWITCH_DOMAIN, INPUT_BOOLEAN_DOMAIN]),
-        ),
-        vol.Optional(CONF_HEATER_2): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[SWITCH_DOMAIN, INPUT_BOOLEAN_DOMAIN]),
-        ),
-        vol.Optional(CONF_HEATER_3): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[SWITCH_DOMAIN, INPUT_BOOLEAN_DOMAIN]),
-        ),
-        vol.Optional(CONF_HEATER_4): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[SWITCH_DOMAIN, INPUT_BOOLEAN_DOMAIN]),
+        vol.Required(CONF_UNDERLYING_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[SWITCH_DOMAIN, INPUT_BOOLEAN_DOMAIN], multiple=True
+            ),
        ),
        vol.Optional(CONF_HEATER_KEEP_ALIVE): cv.positive_int,
        vol.Required(CONF_PROP_FUNCTION, default=PROPORTIONAL_FUNCTION_TPI): vol.In(
@@ -111,17 +137,8 @@ STEP_THERMOSTAT_SWITCH = vol.Schema(  # pylint: disable=invalid-name

 STEP_THERMOSTAT_CLIMATE = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Required(CONF_CLIMATE): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=CLIMATE_DOMAIN),
-        ),
-        vol.Optional(CONF_CLIMATE_2): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=CLIMATE_DOMAIN),
-        ),
-        vol.Optional(CONF_CLIMATE_3): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=CLIMATE_DOMAIN),
-        ),
-        vol.Optional(CONF_CLIMATE_4): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=CLIMATE_DOMAIN),
+        vol.Required(CONF_UNDERLYING_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(domain=CLIMATE_DOMAIN, multiple=True),
        ),
        vol.Optional(CONF_AC_MODE, default=False): cv.boolean,
        vol.Optional(
@@ -150,17 +167,10 @@ STEP_THERMOSTAT_CLIMATE = vol.Schema(  # pylint: disable=invalid-name

 STEP_THERMOSTAT_VALVE = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Required(CONF_VALVE): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN]),
-        ),
-        vol.Optional(CONF_VALVE_2): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN]),
-        ),
-        vol.Optional(CONF_VALVE_3): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN]),
-        ),
-        vol.Optional(CONF_VALVE_4): selector.EntitySelector(
-            selector.EntitySelectorConfig(domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN]),
+        vol.Required(CONF_UNDERLYING_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN], multiple=True
+            ),
        ),
        vol.Required(CONF_PROP_FUNCTION, default=PROPORTIONAL_FUNCTION_TPI): vol.In(
            [
@@ -173,6 +183,45 @@ STEP_THERMOSTAT_VALVE = vol.Schema(  # pylint: disable=invalid-name
    }
 )

+STEP_AUTO_START_STOP = vol.Schema(  # pylint: disable=invalid-name
+    {
+        vol.Optional(
+            CONF_AUTO_START_STOP_LEVEL, default=AUTO_START_STOP_LEVEL_NONE
+        ): selector.SelectSelector(
+            selector.SelectSelectorConfig(
+                options=CONF_AUTO_START_STOP_LEVELS,
+                translation_key="auto_start_stop",
+                mode="dropdown",
+            )
+        ),
+    }
+)
+
+STEP_VALVE_REGULATION = vol.Schema(  # pylint: disable=invalid-name
+    {
+        vol.Required(CONF_OPENING_DEGREE_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN], multiple=True
+            ),
+        ),
+        vol.Optional(CONF_OFFSET_CALIBRATION_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN], multiple=True
+            ),
+        ),
+        vol.Optional(CONF_CLOSING_DEGREE_LIST): selector.EntitySelector(
+            selector.EntitySelectorConfig(
+                domain=[NUMBER_DOMAIN, INPUT_NUMBER_DOMAIN], multiple=True
+            ),
+        ),
+        vol.Required(CONF_PROP_FUNCTION, default=PROPORTIONAL_FUNCTION_TPI): vol.In(
+            [
+                PROPORTIONAL_FUNCTION_TPI,
+            ]
+        ),
+    }
+)
+
 STEP_TPI_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
        vol.Required(CONF_USE_TPI_CENTRAL_CONFIG, default=True): cv.boolean,
@@ -181,8 +230,16 @@ STEP_TPI_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name

 STEP_CENTRAL_TPI_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Required(CONF_TPI_COEF_INT, default=0.6): vol.Coerce(float),
-        vol.Required(CONF_TPI_COEF_EXT, default=0.01): vol.Coerce(float),
+        vol.Required(CONF_TPI_COEF_INT, default=0.6): selector.NumberSelector(
+            selector.NumberSelectorConfig(
+                min=0.0, max=1.0, step=0.01, mode=selector.NumberSelectorMode.BOX
+            )
+        ),
+        vol.Required(CONF_TPI_COEF_EXT, default=0.01): selector.NumberSelector(
+            selector.NumberSelectorConfig(
+                min=0.0, max=1.0, step=0.01, mode=selector.NumberSelectorMode.BOX
+            )
+        ),
    }
 )

@@ -192,18 +249,6 @@ STEP_PRESETS_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    }
 )

-STEP_CENTRAL_PRESETS_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
-    {vol.Optional(v, default=0): vol.Coerce(float) for (k, v) in CONF_PRESETS.items()}
-)
-
-STEP_CENTRAL_PRESETS_WITH_AC_DATA_SCHEMA = (
-    vol.Schema(  # pylint: disable=invalid-name  # pylint: disable=invalid-name
-        {
-            vol.Optional(v, default=0): vol.Coerce(float)
-            for (k, v) in CONF_PRESETS_WITH_AC.items()
-        }
-    )
-)

 STEP_WINDOW_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
@@ -251,7 +296,7 @@ STEP_CENTRAL_WINDOW_WO_AUTO_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid

 STEP_MOTION_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Optional(CONF_MOTION_SENSOR): selector.EntitySelector(
+        vol.Required(CONF_MOTION_SENSOR): selector.EntitySelector(
            selector.EntitySelectorConfig(
                domain=[BINARY_SENSOR_DOMAIN, INPUT_BOOLEAN_DOMAIN]
            ),
@@ -283,10 +328,10 @@ STEP_CENTRAL_MOTION_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name

 STEP_CENTRAL_POWER_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Optional(CONF_POWER_SENSOR): selector.EntitySelector(
+        vol.Required(CONF_POWER_SENSOR): selector.EntitySelector(
            selector.EntitySelectorConfig(domain=[SENSOR_DOMAIN, INPUT_NUMBER_DOMAIN]),
        ),
-        vol.Optional(CONF_MAX_POWER_SENSOR): selector.EntitySelector(
+        vol.Required(CONF_MAX_POWER_SENSOR): selector.EntitySelector(
            selector.EntitySelectorConfig(domain=[SENSOR_DOMAIN, INPUT_NUMBER_DOMAIN]),
        ),
        vol.Optional(CONF_PRESET_POWER, default="13"): vol.Coerce(float),
@@ -301,19 +346,7 @@ STEP_POWER_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name

 STEP_CENTRAL_PRESENCE_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
    {
-        vol.Optional(v, default=17): vol.Coerce(float)
-        for (k, v) in CONF_PRESETS_AWAY.items()
-    }
-)
-
-STEP_CENTRAL_PRESENCE_WITH_AC_DATA_SCHEMA = {  # pylint: disable=invalid-name
-    vol.Optional(v, default=17): vol.Coerce(float)
-    for (k, v) in CONF_PRESETS_AWAY_WITH_AC.items()
-}
-
-STEP_PRESENCE_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
-    {
-        vol.Optional(CONF_PRESENCE_SENSOR): selector.EntitySelector(
+        vol.Required(CONF_PRESENCE_SENSOR): selector.EntitySelector(
            selector.EntitySelectorConfig(
                domain=[
                    PERSON_DOMAIN,
@@ -321,7 +354,12 @@ STEP_PRESENCE_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
                    INPUT_BOOLEAN_DOMAIN,
                ]
            ),
-        ),
+        )
+    },
+)
+
+STEP_PRESENCE_DATA_SCHEMA = vol.Schema(  # pylint: disable=invalid-name
+    {
        vol.Required(CONF_USE_PRESENCE_CENTRAL_CONFIG, default=True): cv.boolean,
    }
 )
--- a/custom_components/versatile_thermostat/const.py
+++ b/custom_components/versatile_thermostat/const.py
@@ -2,8 +2,12 @@
 """Constants for the Versatile Thermostat integration."""

 import logging
+import math
+from typing import Literal
+from datetime import datetime

 from enum import Enum
+from homeassistant.core import HomeAssistant
 from homeassistant.const import CONF_NAME, Platform

 from homeassistant.components.climate import (
@@ -15,6 +19,7 @@ from homeassistant.components.climate import (
 )

 from homeassistant.exceptions import HomeAssistantError
+from homeassistant.util import dt as dt_util

 from .prop_algorithm import (
    PROPORTIONAL_FUNCTION_TPI,
@@ -22,6 +27,10 @@ from .prop_algorithm import (

 _LOGGER = logging.getLogger(__name__)

+CONFIG_VERSION = 2
+CONFIG_MINOR_VERSION = 0
+
+PRESET_TEMP_SUFFIX = "_temp"
 PRESET_AC_SUFFIX = "_ac"
 PRESET_ECO_AC = PRESET_ECO + PRESET_AC_SUFFIX
 PRESET_COMFORT_AC = PRESET_COMFORT + PRESET_AC_SUFFIX
@@ -39,20 +48,21 @@ HIDDEN_PRESETS = [PRESET_POWER, PRESET_SECURITY]

 DOMAIN = "versatile_thermostat"

+# The order is important.
 PLATFORMS: list[Platform] = [
-    Platform.NUMBER,
    Platform.SELECT,
    Platform.CLIMATE,
    Platform.SENSOR,
+    # Number should be after CLIMATE
+    Platform.NUMBER,
    Platform.BINARY_SENSOR,
+    Platform.SWITCH,
 ]

-CONF_HEATER = "heater_entity_id"
-CONF_HEATER_2 = "heater_entity2_id"
-CONF_HEATER_3 = "heater_entity3_id"
-CONF_HEATER_4 = "heater_entity4_id"
+CONF_UNDERLYING_LIST = "underlying_entity_ids"
 CONF_HEATER_KEEP_ALIVE = "heater_keep_alive"
 CONF_TEMP_SENSOR = "temperature_sensor_entity_id"
+CONF_LAST_SEEN_TEMP_SENSOR = "last_seen_temperature_sensor_entity_id"
 CONF_EXTERNAL_TEMP_SENSOR = "external_temperature_sensor_entity_id"
 CONF_POWER_SENSOR = "power_sensor_entity_id"
 CONF_MAX_POWER_SENSOR = "max_power_sensor_entity_id"
@@ -81,24 +91,19 @@ CONF_THERMOSTAT_CENTRAL_CONFIG = "thermostat_central_config"
 CONF_THERMOSTAT_SWITCH = "thermostat_over_switch"
 CONF_THERMOSTAT_CLIMATE = "thermostat_over_climate"
 CONF_THERMOSTAT_VALVE = "thermostat_over_valve"
-CONF_CLIMATE = "climate_entity_id"
-CONF_CLIMATE_2 = "climate_entity2_id"
-CONF_CLIMATE_3 = "climate_entity3_id"
-CONF_CLIMATE_4 = "climate_entity4_id"
 CONF_USE_WINDOW_FEATURE = "use_window_feature"
 CONF_USE_MOTION_FEATURE = "use_motion_feature"
 CONF_USE_PRESENCE_FEATURE = "use_presence_feature"
 CONF_USE_POWER_FEATURE = "use_power_feature"
+CONF_USE_CENTRAL_BOILER_FEATURE = "use_central_boiler_feature"
+CONF_USE_AUTO_START_STOP_FEATURE = "use_auto_start_stop_feature"
 CONF_AC_MODE = "ac_mode"
 CONF_WINDOW_AUTO_OPEN_THRESHOLD = "window_auto_open_threshold"
 CONF_WINDOW_AUTO_CLOSE_THRESHOLD = "window_auto_close_threshold"
 CONF_WINDOW_AUTO_MAX_DURATION = "window_auto_max_duration"
-CONF_VALVE = "valve_entity_id"
-CONF_VALVE_2 = "valve_entity2_id"
-CONF_VALVE_3 = "valve_entity3_id"
-CONF_VALVE_4 = "valve_entity4_id"
 CONF_AUTO_REGULATION_MODE = "auto_regulation_mode"
 CONF_AUTO_REGULATION_NONE = "auto_regulation_none"
+CONF_AUTO_REGULATION_VALVE = "auto_regulation_valve"
 CONF_AUTO_REGULATION_SLOW = "auto_regulation_slow"
 CONF_AUTO_REGULATION_LIGHT = "auto_regulation_light"
 CONF_AUTO_REGULATION_MEDIUM = "auto_regulation_medium"
@@ -115,10 +120,28 @@ CONF_AUTO_FAN_MEDIUM = "auto_fan_medium"
 CONF_AUTO_FAN_HIGH = "auto_fan_high"
 CONF_AUTO_FAN_TURBO = "auto_fan_turbo"
 CONF_STEP_TEMPERATURE = "step_temperature"
+CONF_OFFSET_CALIBRATION_LIST = "offset_calibration_entity_ids"
+CONF_OPENING_DEGREE_LIST = "opening_degree_entity_ids"
+CONF_CLOSING_DEGREE_LIST = "closing_degree_entity_ids"
+
+# Deprecated
+CONF_HEATER = "heater_entity_id"
+CONF_HEATER_2 = "heater_entity2_id"
+CONF_HEATER_3 = "heater_entity3_id"
+CONF_HEATER_4 = "heater_entity4_id"
+CONF_CLIMATE = "climate_entity_id"
+CONF_CLIMATE_2 = "climate_entity2_id"
+CONF_CLIMATE_3 = "climate_entity3_id"
+CONF_CLIMATE_4 = "climate_entity4_id"
+CONF_VALVE = "valve_entity_id"
+CONF_VALVE_2 = "valve_entity2_id"
+CONF_VALVE_3 = "valve_entity3_id"
+CONF_VALVE_4 = "valve_entity4_id"

 # Global params into configuration.yaml
 CONF_SHORT_EMA_PARAMS = "short_ema_params"
 CONF_SAFETY_MODE = "safety_mode"
+CONF_MAX_ON_PERCENT = "max_on_percent"

 CONF_USE_MAIN_CENTRAL_CONFIG = "use_main_central_config"
 CONF_USE_TPI_CENTRAL_CONFIG = "use_tpi_central_config"
@@ -131,13 +154,42 @@ CONF_USE_ADVANCED_CENTRAL_CONFIG = "use_advanced_central_config"

 CONF_USE_CENTRAL_MODE = "use_central_mode"

-CONF_ADD_CENTRAL_BOILER_CONTROL = "add_central_boiler_control"
 CONF_CENTRAL_BOILER_ACTIVATION_SRV = "central_boiler_activation_service"
 CONF_CENTRAL_BOILER_DEACTIVATION_SRV = "central_boiler_deactivation_service"

 CONF_USED_BY_CENTRAL_BOILER = "used_by_controls_central_boiler"
 CONF_WINDOW_ACTION = "window_action"

+CONF_AUTO_START_STOP_LEVEL = "auto_start_stop_level"
+AUTO_START_STOP_LEVEL_NONE = "auto_start_stop_none"
+AUTO_START_STOP_LEVEL_SLOW = "auto_start_stop_slow"
+AUTO_START_STOP_LEVEL_MEDIUM = "auto_start_stop_medium"
+AUTO_START_STOP_LEVEL_FAST = "auto_start_stop_fast"
+CONF_AUTO_START_STOP_LEVELS = [
+    AUTO_START_STOP_LEVEL_NONE,
+    AUTO_START_STOP_LEVEL_SLOW,
+    AUTO_START_STOP_LEVEL_MEDIUM,
+    AUTO_START_STOP_LEVEL_FAST,
+]
+
+# For explicit typing purpose only
+TYPE_AUTO_START_STOP_LEVELS = Literal[  # pylint: disable=invalid-name
+    AUTO_START_STOP_LEVEL_FAST,
+    AUTO_START_STOP_LEVEL_MEDIUM,
+    AUTO_START_STOP_LEVEL_SLOW,
+    AUTO_START_STOP_LEVEL_NONE,
+]
+
+HVAC_OFF_REASON_NAME = "hvac_off_reason"
+HVAC_OFF_REASON_MANUAL = "manual"
+HVAC_OFF_REASON_AUTO_START_STOP = "auto_start_stop"
+HVAC_OFF_REASON_WINDOW_DETECTION = "window_detection"
+HVAC_OFF_REASONS = Literal[  # pylint: disable=invalid-name
+    HVAC_OFF_REASON_MANUAL,
+    HVAC_OFF_REASON_AUTO_START_STOP,
+    HVAC_OFF_REASON_WINDOW_DETECTION,
+]
+
 DEFAULT_SHORT_EMA_PARAMS = {
    "max_alpha": 0.5,
    # In sec
@@ -146,7 +198,7 @@ DEFAULT_SHORT_EMA_PARAMS = {
 }

 CONF_PRESETS = {
-    p: f"{p}_temp"
+    p: f"{p}{PRESET_TEMP_SUFFIX}"
    for p in (
        PRESET_FROST_PROTECTION,
        PRESET_ECO,
@@ -156,7 +208,7 @@ CONF_PRESETS = {
 }

 CONF_PRESETS_WITH_AC = {
-    p: f"{p}_temp"
+    p: f"{p}{PRESET_TEMP_SUFFIX}"
    for p in (
        PRESET_FROST_PROTECTION,
        PRESET_ECO,
@@ -172,7 +224,7 @@ CONF_PRESETS_WITH_AC = {
 PRESET_AWAY_SUFFIX = "_away"

 CONF_PRESETS_AWAY = {
-    p: f"{p}_temp"
+    p: f"{p}{PRESET_TEMP_SUFFIX}"
    for p in (
        PRESET_FROST_PROTECTION + PRESET_AWAY_SUFFIX,
        PRESET_ECO + PRESET_AWAY_SUFFIX,
@@ -182,7 +234,7 @@ CONF_PRESETS_AWAY = {
 }

 CONF_PRESETS_AWAY_WITH_AC = {
-    p: f"{p}_temp"
+    p: f"{p}{PRESET_TEMP_SUFFIX}"
    for p in (
        PRESET_FROST_PROTECTION + PRESET_AWAY_SUFFIX,
        PRESET_ECO + PRESET_AWAY_SUFFIX,
@@ -209,10 +261,6 @@ CONF_PRESETS_AWAY_WITH_AC_VALUES = list(CONF_PRESETS_AWAY_WITH_AC.values())
 ALL_CONF = (
    [
        CONF_NAME,
-        CONF_HEATER,
-        CONF_HEATER_2,
-        CONF_HEATER_3,
-        CONF_HEATER_4,
        CONF_HEATER_KEEP_ALIVE,
        CONF_TEMP_SENSOR,
        CONF_EXTERNAL_TEMP_SENSOR,
@@ -242,19 +290,12 @@ ALL_CONF = (
        CONF_THERMOSTAT_TYPE,
        CONF_THERMOSTAT_SWITCH,
        CONF_THERMOSTAT_CLIMATE,
-        CONF_CLIMATE,
-        CONF_CLIMATE_2,
-        CONF_CLIMATE_3,
-        CONF_CLIMATE_4,
        CONF_USE_WINDOW_FEATURE,
        CONF_USE_MOTION_FEATURE,
        CONF_USE_PRESENCE_FEATURE,
        CONF_USE_POWER_FEATURE,
+        CONF_USE_CENTRAL_BOILER_FEATURE,
        CONF_AC_MODE,
-        CONF_VALVE,
-        CONF_VALVE_2,
-        CONF_VALVE_3,
-        CONF_VALVE_4,
        CONF_AUTO_REGULATION_MODE,
        CONF_AUTO_REGULATION_DTEMP,
        CONF_AUTO_REGULATION_PERIOD_MIN,
@@ -270,7 +311,6 @@ ALL_CONF = (
        CONF_USE_PRESENCE_CENTRAL_CONFIG,
        CONF_USE_ADVANCED_CENTRAL_CONFIG,
        CONF_USE_CENTRAL_MODE,
-        CONF_ADD_CENTRAL_BOILER_CONTROL,
        CONF_USED_BY_CENTRAL_BOILER,
        CONF_CENTRAL_BOILER_ACTIVATION_SRV,
        CONF_CENTRAL_BOILER_DEACTIVATION_SRV,
@@ -289,6 +329,7 @@ CONF_FUNCTIONS = [

 CONF_AUTO_REGULATION_MODES = [
    CONF_AUTO_REGULATION_NONE,
+    CONF_AUTO_REGULATION_VALVE,
    CONF_AUTO_REGULATION_LIGHT,
    CONF_AUTO_REGULATION_MEDIUM,
    CONF_AUTO_REGULATION_STRONG,
@@ -323,7 +364,11 @@ CONF_WINDOW_ACTIONS = [
    CONF_WINDOW_ECO_TEMP,
 ]

-SUPPORT_FLAGS = ClimateEntityFeature.TARGET_TEMPERATURE
+SUPPORT_FLAGS = (
+    ClimateEntityFeature.TARGET_TEMPERATURE
+    | ClimateEntityFeature.TURN_OFF
+    | ClimateEntityFeature.TURN_ON
+)

 SERVICE_SET_PRESENCE = "set_presence"
 SERVICE_SET_PRESET_TEMPERATURE = "set_preset_temperature"
@@ -361,7 +406,9 @@ CENTRAL_MODES = [
 class RegulationParamSlow:
    """Light parameters for slow latency regulation"""

-    kp: float = 0.2  # 20% of the current internal regulation offset are caused by the current difference of target temperature and room temperature
+    kp: float = (
+        0.2  # 20% of the current internal regulation offset are caused by the current difference of target temperature and room temperature
+    )
    ki: float = (
        0.8 / 288.0
    )  # 80% of the current internal regulation offset are caused by the average offset of the past 24 hours
@@ -369,7 +416,9 @@ class RegulationParamSlow:
        1.0 / 25.0
    )  # this will add 1°C to the offset when it's 25°C colder outdoor than indoor
    offset_max: float = 2.0  # limit to a final offset of -2°C to +2°C
-    stabilization_threshold: float = 0.0  # this needs to be disabled as otherwise the long term accumulated error will always be reset when the temp briefly crosses from/to below/above the target
+    stabilization_threshold: float = (
+        0.0  # this needs to be disabled as otherwise the long term accumulated error will always be reset when the temp briefly crosses from/to below/above the target
+    )
    accumulated_error_threshold: float = (
        2.0 * 288
    )  # this allows up to 2°C long term offset in both directions
@@ -419,9 +468,9 @@ class RegulationParamVeryStrong:
    kp: float = 0.6
    ki: float = 0.1
    k_ext: float = 0.2
-    offset_max: float = 4
+    offset_max: float = 8
    stabilization_threshold: float = 0.1
-    accumulated_error_threshold: float = 30
+    accumulated_error_threshold: float = 80


 class EventType(Enum):
@@ -434,6 +483,7 @@ class EventType(Enum):
    CENTRAL_BOILER_EVENT: str = "versatile_thermostat_central_boiler_event"
    PRESET_EVENT: str = "versatile_thermostat_preset_event"
    WINDOW_AUTO_EVENT: str = "versatile_thermostat_window_auto_event"
+    AUTO_START_STOP_EVENT: str = "versatile_thermostat_auto_start_stop_event"


 def send_vtherm_event(hass, event_type: EventType, entity, data: dict):
@@ -445,6 +495,38 @@ def send_vtherm_event(hass, event_type: EventType, entity, data: dict):
    hass.bus.fire(event_type.value, data)


+def get_safe_float(hass, entity_id: str):
+    """Get a safe float state value for an entity.
+    Return None if entity is not available"""
+    if (
+        entity_id is None
+        or not (state := hass.states.get(entity_id))
+        or state.state == "unknown"
+        or state.state == "unavailable"
+    ):
+        return None
+    float_val = float(state.state)
+    return None if math.isinf(float_val) or not math.isfinite(float_val) else float_val
+
+
+def get_tz(hass: HomeAssistant):
+    """Get the current timezone"""
+
+    return dt_util.get_time_zone(hass.config.time_zone)
+
+
+class NowClass:
+    """For testing purpose only"""
+
+    @staticmethod
+    def get_now(hass: HomeAssistant) -> datetime:
+        """A test function to get the now.
+        For testing purpose this method can be overriden to get a specific
+        timestamp.
+        """
+        return datetime.now(get_tz(hass))
+
+
 class UnknownEntity(HomeAssistantError):
    """Error to indicate there is an unknown entity_id given."""

@@ -461,6 +543,15 @@ class ServiceConfigurationError(HomeAssistantError):
    """Error in the service configuration to control the central boiler"""


+class ConfigurationNotCompleteError(HomeAssistantError):
+    """Error the configuration is not complete"""
+
+
+class ValveRegulationNbEntitiesIncorrect(HomeAssistantError):
+    """Error to indicate there is an error in the configuration of the TRV with valve regulation.
+    The number of specific entities is incorrect."""
+
+
 class overrides:  # pylint: disable=invalid-name
    """An annotation to inform overrides"""

--- a/custom_components/versatile_thermostat/icons.json
+++ b/custom_components/versatile_thermostat/icons.json
@@ -0,0 +1,18 @@
+{
+  "entity": {
+    "climate": {
+      "versatile_thermostat": {
+        "state_attributes": {
+          "preset_mode": {
+            "state": {
+              "shedding": "mdi:power-plug-off",
+              "safety": "mdi:shield-alert",
+              "none": "mdi:knob",
+              "frost": "mdi:snowflake"
+            }
+          }
+        }
+      }
+    }
+  }
+}
--- a/custom_components/versatile_thermostat/keep_alive.py
+++ b/custom_components/versatile_thermostat/keep_alive.py
@@ -10,6 +10,7 @@ the keep_alive setting of Home Assistant's Generic Thermostat integration:
 import logging
 from collections.abc import Awaitable, Callable
 from datetime import timedelta, datetime
+from time import monotonic

 from homeassistant.core import HomeAssistant, CALLBACK_TYPE
 from homeassistant.helpers.event import async_track_time_interval
@@ -18,16 +19,95 @@ from homeassistant.helpers.event import async_track_time_interval
 _LOGGER = logging.getLogger(__name__)


+class BackoffTimer:
+    """Exponential backoff timer with a non-blocking polling-style implementation.
+
+    Usage example:
+        timer = BackoffTimer(multiplier=1.5, upper_limit_sec=600)
+        while some_condition:
+            if timer.is_ready():
+                do_something()
+    """
+
+    def __init__(
+        self,
+        *,
+        multiplier=2.0,
+        lower_limit_sec=30,
+        upper_limit_sec=86400,
+        initially_ready=True,
+    ):
+        """Initialize a BackoffTimer instance.
+
+        Args:
+            multiplier (int, optional): Period multiplier applied when is_ready() is True.
+            lower_limit_sec (int, optional): Initial backoff period in seconds.
+            upper_limit_sec (int, optional): Maximum backoff period in seconds.
+            initially_ready (bool, optional): Whether is_ready() should return True the
+            first time it is called, or after a call to reset().
+        """
+        self._multiplier = multiplier
+        self._lower_limit_sec = lower_limit_sec
+        self._upper_limit_sec = upper_limit_sec
+        self._initially_ready = initially_ready
+
+        self._timestamp = 0
+        self._period_sec = self._lower_limit_sec
+
+    @property
+    def in_progress(self) -> bool:
+        """Whether the backoff timer is in progress (True after a call to is_ready())."""
+        return bool(self._timestamp)
+
+    def reset(self):
+        """Reset a BackoffTimer instance."""
+        self._timestamp = 0
+        self._period_sec = self._lower_limit_sec
+
+    def is_ready(self) -> bool:
+        """Check whether an exponentially increasing period of time has passed.
+
+        Whenever is_ready() returns True, the timer period is multiplied so that
+        it takes longer until is_ready() returns True again.
+        Returns:
+            bool: True if enough time has passed since one of the following events,
+            in relation to an instance of this class:
+            - The last time when this method returned True, if it ever did.
+            - Or else, when this method was first called after a call to reset().
+            - Or else, when this method was first called.
+            False otherwise.
+        """
+        now = monotonic()
+        if self._timestamp == 0:
+            self._timestamp = now
+            return self._initially_ready
+        elif now - self._timestamp >= self._period_sec:
+            self._timestamp = now
+            self._period_sec = max(
+                self._lower_limit_sec,
+                min(self._upper_limit_sec, self._period_sec * self._multiplier),
+            )
+            return True
+
+        return False
+
+
 class IntervalCaller:
    """Repeatedly call a given async action function at a given regular interval.

    Convenience wrapper around Home Assistant's `async_track_time_interval` function.
    """

-    def __init__(self, hass: HomeAssistant, interval_sec: int) -> None:
+    def __init__(self, hass: HomeAssistant, interval_sec: float) -> None:
        self._hass = hass
        self._interval_sec = interval_sec
        self._remove_handle: CALLBACK_TYPE | None = None
+        self.backoff_timer = BackoffTimer()
+
+    @property
+    def interval_sec(self) -> float:
+        """Return the calling interval in seconds."""
+        return self._interval_sec

    def cancel(self):
        """Cancel the regular calls to the action function."""
@@ -43,7 +123,11 @@ class IntervalCaller:

        async def callback(_time: datetime):
            try:
-                _LOGGER.debug("Calling keep-alive action")
+                _LOGGER.debug(
+                    "Calling keep-alive action '%s' (%ss interval)",
+                    action.__name__,
+                    self._interval_sec,
+                )
                await action()
            except Exception as e:  # pylint: disable=broad-exception-caught
                _LOGGER.error(e)
--- a/custom_components/versatile_thermostat/manifest.json
+++ b/custom_components/versatile_thermostat/manifest.json
@@ -14,6 +14,6 @@
  "quality_scale": "silver",
  "requirements": [],
  "ssdp": [],
-  "version": "5.4.1",
+  "version": "6.8.3",
  "zeroconf": []
 }
--- a/custom_components/versatile_thermostat/number.py
+++ b/custom_components/versatile_thermostat/number.py
@@ -6,24 +6,79 @@ import logging
 # from homeassistant.const import EVENT_HOMEASSISTANT_START
 from homeassistant.core import HomeAssistant, CoreState  # , callback

-from homeassistant.components.number import NumberEntity, NumberMode
+from homeassistant.components.number import (
+    NumberEntity,
+    NumberMode,
+    NumberDeviceClass,
+    DOMAIN as NUMBER_DOMAIN,
+    DEFAULT_MAX_VALUE,
+    DEFAULT_MIN_VALUE,
+    DEFAULT_STEP,
+)
+from homeassistant.components.climate import (
+    PRESET_BOOST,
+    PRESET_COMFORT,
+    PRESET_ECO,
+)
+
 from homeassistant.helpers.device_registry import DeviceInfo, DeviceEntryType
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.util import slugify

+from .vtherm_api import VersatileThermostatAPI
+from .commons import VersatileThermostatBaseEntity

-from custom_components.versatile_thermostat.vtherm_api import VersatileThermostatAPI
 from .const import (
    DOMAIN,
    DEVICE_MANUFACTURER,
    CONF_NAME,
    CONF_THERMOSTAT_TYPE,
    CONF_THERMOSTAT_CENTRAL_CONFIG,
-    CONF_ADD_CENTRAL_BOILER_CONTROL,
+    CONF_TEMP_MIN,
+    CONF_TEMP_MAX,
+    CONF_STEP_TEMPERATURE,
+    CONF_AC_MODE,
+    PRESET_FROST_PROTECTION,
+    PRESET_ECO_AC,
+    PRESET_COMFORT_AC,
+    PRESET_BOOST_AC,
+    PRESET_AWAY_SUFFIX,
+    PRESET_TEMP_SUFFIX,
+    CONF_PRESETS_VALUES,
+    CONF_PRESETS_WITH_AC_VALUES,
+    CONF_PRESETS_AWAY_VALUES,
+    CONF_PRESETS_AWAY_WITH_AC_VALUES,
+    CONF_USE_PRESETS_CENTRAL_CONFIG,
+    CONF_USE_PRESENCE_CENTRAL_CONFIG,
+    CONF_USE_PRESENCE_FEATURE,
+    CONF_USE_CENTRAL_BOILER_FEATURE,
    overrides,
+    CONF_USE_MAIN_CENTRAL_CONFIG,
 )

+PRESET_ICON_MAPPING = {
+    PRESET_FROST_PROTECTION + PRESET_TEMP_SUFFIX: "mdi:snowflake-thermometer",
+    PRESET_ECO + PRESET_TEMP_SUFFIX: "mdi:leaf",
+    PRESET_COMFORT + PRESET_TEMP_SUFFIX: "mdi:sofa",
+    PRESET_BOOST + PRESET_TEMP_SUFFIX: "mdi:rocket-launch",
+    PRESET_ECO_AC + PRESET_TEMP_SUFFIX: "mdi:leaf-circle-outline",
+    PRESET_COMFORT_AC + PRESET_TEMP_SUFFIX: "mdi:sofa-outline",
+    PRESET_BOOST_AC + PRESET_TEMP_SUFFIX: "mdi:rocket-launch-outline",
+    PRESET_FROST_PROTECTION
+    + PRESET_AWAY_SUFFIX
+    + PRESET_TEMP_SUFFIX: "mdi:snowflake-thermometer",
+    PRESET_ECO + PRESET_AWAY_SUFFIX + PRESET_TEMP_SUFFIX: "mdi:leaf",
+    PRESET_COMFORT + PRESET_AWAY_SUFFIX + PRESET_TEMP_SUFFIX: "mdi:sofa",
+    PRESET_BOOST + PRESET_AWAY_SUFFIX + PRESET_TEMP_SUFFIX: "mdi:rocket-launch",
+    PRESET_ECO_AC + PRESET_AWAY_SUFFIX + PRESET_TEMP_SUFFIX: "mdi:leaf-circle-outline",
+    PRESET_COMFORT_AC + PRESET_AWAY_SUFFIX + PRESET_TEMP_SUFFIX: "mdi:sofa-outline",
+    PRESET_BOOST_AC
+    + PRESET_AWAY_SUFFIX
+    + PRESET_TEMP_SUFFIX: "mdi:rocket-launch-outline",
+}
+
 _LOGGER = logging.getLogger(__name__)


@@ -40,19 +95,101 @@ async def async_setup_entry(
    unique_id = entry.entry_id
    name = entry.data.get(CONF_NAME)
    vt_type = entry.data.get(CONF_THERMOSTAT_TYPE)
-    is_central_boiler = entry.data.get(CONF_ADD_CENTRAL_BOILER_CONTROL)
+    # is_central_boiler = entry.data.get(CONF_USE_CENTRAL_BOILER_FEATURE)

-    if vt_type != CONF_THERMOSTAT_CENTRAL_CONFIG or not is_central_boiler:
-        return
+    entities = []

-    entities = [
-        ActivateBoilerThresholdNumber(hass, unique_id, name, entry.data),
-    ]
+    if vt_type != CONF_THERMOSTAT_CENTRAL_CONFIG:
+        # Creates non central temperature entities
+        if not entry.data.get(CONF_USE_PRESETS_CENTRAL_CONFIG, False):
+            if entry.data.get(CONF_AC_MODE, False):
+                for preset in CONF_PRESETS_WITH_AC_VALUES:
+                    _LOGGER.debug(
+                        "%s - configuring Number non central, AC, non AWAY for preset %s",
+                        name,
+                        preset,
+                    )
+                    entities.append(
+                        TemperatureNumber(
+                            hass, unique_id, name, preset, True, False, entry.data
+                        )
+                    )
+            else:
+                for preset in CONF_PRESETS_VALUES:
+                    _LOGGER.debug(
+                        "%s - configuring Number non central, non AC, non AWAY for preset %s",
+                        name,
+                        preset,
+                    )
+                    entities.append(
+                        TemperatureNumber(
+                            hass, unique_id, name, preset, False, False, entry.data
+                        )
+                    )

-    async_add_entities(entities, True)
+        if entry.data.get(
+            CONF_USE_PRESENCE_FEATURE, False
+        ) is True and not entry.data.get(CONF_USE_PRESENCE_CENTRAL_CONFIG, False):
+            if entry.data.get(CONF_AC_MODE, False):
+                for preset in CONF_PRESETS_AWAY_WITH_AC_VALUES:
+                    _LOGGER.debug(
+                        "%s - configuring Number non central, AC, AWAY for preset %s",
+                        name,
+                        preset,
+                    )
+                    entities.append(
+                        TemperatureNumber(
+                            hass, unique_id, name, preset, True, True, entry.data
+                        )
+                    )
+            else:
+                for preset in CONF_PRESETS_AWAY_VALUES:
+                    _LOGGER.debug(
+                        "%s - configuring Number non central, non AC, AWAY for preset %s",
+                        name,
+                        preset,
+                    )
+                    entities.append(
+                        TemperatureNumber(
+                            hass, unique_id, name, preset, False, True, entry.data
+                        )
+                    )
+
+    # For central config only
+    else:
+        if entry.data.get(CONF_USE_CENTRAL_BOILER_FEATURE):
+            entities.append(
+                ActivateBoilerThresholdNumber(hass, unique_id, name, entry.data)
+            )
+        for preset in CONF_PRESETS_WITH_AC_VALUES:
+            _LOGGER.debug(
+                "%s - configuring Number central, AC, non AWAY for preset %s",
+                name,
+                preset,
+            )
+            entities.append(
+                CentralConfigTemperatureNumber(
+                    hass, unique_id, name, preset, True, False, entry.data
+                )
+            )
+
+        for preset in CONF_PRESETS_AWAY_WITH_AC_VALUES:
+            _LOGGER.debug(
+                "%s - configuring Number central, AC, AWAY for preset %s", name, preset
+            )
+            entities.append(
+                CentralConfigTemperatureNumber(
+                    hass, unique_id, name, preset, True, True, entry.data
+                )
+            )
+
+    if len(entities) > 0:
+        async_add_entities(entities, True)


-class ActivateBoilerThresholdNumber(NumberEntity, RestoreEntity):
+class ActivateBoilerThresholdNumber(
+    NumberEntity, RestoreEntity
+):  # pylint: disable=abstract-method
    """Representation of the threshold of the number of VTherm
    which should be active to activate the boiler"""

@@ -115,3 +252,273 @@ class ActivateBoilerThresholdNumber(NumberEntity, RestoreEntity):

    def __str__(self):
        return f"VersatileThermostat-{self.name}"
+
+
+class CentralConfigTemperatureNumber(
+    NumberEntity, RestoreEntity
+):  # pylint: disable=abstract-method
+    """Representation of one temperature number"""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        unique_id,
+        name,
+        preset_name,
+        is_ac,
+        is_away,
+        entry_infos,
+    ) -> None:
+        """Initialize the temperature with entry_infos if available. Else
+        the restoration will do the trick."""
+
+        self._config_id = unique_id
+        self._device_name = name
+        # self._attr_name = name
+
+        self._attr_translation_key = preset_name
+        self.entity_id = f"{NUMBER_DOMAIN}.{slugify(name)}_preset_{preset_name}"
+        self._attr_unique_id = f"central_configuration_preset_{preset_name}"
+        self._attr_device_class = NumberDeviceClass.TEMPERATURE
+        self._attr_native_unit_of_measurement = hass.config.units.temperature_unit
+
+        self._attr_native_step = entry_infos.get(CONF_STEP_TEMPERATURE, 0.5)
+        self._attr_native_min_value = entry_infos.get(CONF_TEMP_MIN)
+        self._attr_native_max_value = entry_infos.get(CONF_TEMP_MAX)
+
+        # Initialize the values if included into the entry_infos. This will do
+        # the temperature migration. Else the temperature will be restored from
+        # previous value
+        # TODO remove this after the next major release and just keep the init min/max
+        temp = None
+        if (temp := entry_infos.get(preset_name, None)) is not None:
+            self._attr_value = self._attr_native_value = temp
+        else:
+            if entry_infos.get(CONF_AC_MODE) is True:
+                self._attr_native_value = self._attr_native_max_value
+            else:
+                self._attr_native_value = self._attr_native_min_value
+
+        self._attr_mode = NumberMode.BOX
+        self._preset_name = preset_name
+        self._is_away = is_away
+        self._is_ac = is_ac
+
+    @property
+    def icon(self) -> str | None:
+        return PRESET_ICON_MAPPING[self._preset_name]
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        """Return the device info."""
+        return DeviceInfo(
+            entry_type=DeviceEntryType.SERVICE,
+            identifiers={(DOMAIN, self._config_id)},
+            name=self._device_name,
+            manufacturer=DEVICE_MANUFACTURER,
+            model=DOMAIN,
+        )
+
+    @overrides
+    async def async_added_to_hass(self) -> None:
+        await super().async_added_to_hass()
+
+        # register the temp entity for this device and preset
+        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self.hass)
+        api.register_temperature_number(self._config_id, self._preset_name, self)
+
+        # Restore value from previous one if exists
+        old_state: CoreState = await self.async_get_last_state()
+        _LOGGER.debug(
+            "%s - Calling async_added_to_hass old_state is %s", self, old_state
+        )
+        try:
+            if old_state is not None and ((value := float(old_state.state)) > 0):
+                self._attr_value = self._attr_native_value = value
+        except ValueError:
+            pass
+
+    @overrides
+    async def async_set_native_value(self, value: float) -> None:
+        """The value have change from the Number Entity in UI"""
+        float_value = float(value)
+        old_value = (
+            None if self._attr_native_value is None else float(self._attr_native_value)
+        )
+
+        if float_value == old_value:
+            return
+
+        self._attr_value = self._attr_native_value = float_value
+
+        # persist the value
+        self.async_write_ha_state()
+
+        # We have to reload all VTherm for which uses the central configuration
+        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self.hass)
+        # Update the VTherms which have temperature in central config
+        self.hass.create_task(api.init_vtherm_preset_with_central())
+
+    def __str__(self):
+        return f"VersatileThermostat-{self.name}"
+
+    @property
+    def native_unit_of_measurement(self) -> str | None:
+        """The unit of measurement"""
+        # TODO Kelvin ? It seems not because all internal values are stored in
+        # ° Celsius but only the render in front can be in °K depending on the
+        # user configuration.
+        return self.hass.config.units.temperature_unit
+
+
+class TemperatureNumber(  # pylint: disable=abstract-method
+    VersatileThermostatBaseEntity, NumberEntity, RestoreEntity
+):
+    """Representation of one temperature number"""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        unique_id,
+        name,
+        preset_name,
+        is_ac,
+        is_away,
+        entry_infos,
+    ) -> None:
+        """Initialize the temperature with entry_infos if available. Else
+        the restoration will do the trick."""
+        super().__init__(hass, unique_id, name)
+
+        self._attr_translation_key = preset_name
+        self.entity_id = f"{NUMBER_DOMAIN}.{slugify(name)}_preset_{preset_name}"
+
+        self._attr_unique_id = f"{self._device_name}_preset_{preset_name}"
+        self._attr_device_class = NumberDeviceClass.TEMPERATURE
+        self._attr_native_unit_of_measurement = hass.config.units.temperature_unit
+
+        self._has_central_main_attributes = entry_infos.get(
+            CONF_USE_MAIN_CENTRAL_CONFIG, False
+        )
+
+        self.init_min_max_step(entry_infos)
+
+        # Initialize the values if included into the entry_infos. This will do
+        # the temperature migration.
+        temp = None
+        if (temp := entry_infos.get(preset_name, None)) is not None:
+            self._attr_value = self._attr_native_value = temp
+        else:
+            if entry_infos.get(CONF_AC_MODE) is True:
+                self._attr_native_value = self._attr_native_max_value
+            else:
+                self._attr_native_value = self._attr_native_min_value
+
+        self._attr_mode = NumberMode.BOX
+        self._preset_name = preset_name
+        self._canonical_preset_name = preset_name.replace(
+            PRESET_TEMP_SUFFIX, ""
+        ).replace(PRESET_AWAY_SUFFIX, "")
+        self._is_away = is_away
+        self._is_ac = is_ac
+
+    @property
+    def icon(self) -> str | None:
+        return PRESET_ICON_MAPPING[self._preset_name]
+
+    @overrides
+    async def async_added_to_hass(self) -> None:
+        await super().async_added_to_hass()
+
+        # register the temp entity for this device and preset
+        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self.hass)
+        api.register_temperature_number(self._config_id, self._preset_name, self)
+
+        old_state: CoreState = await self.async_get_last_state()
+        _LOGGER.debug(
+            "%s - Calling async_added_to_hass old_state is %s", self, old_state
+        )
+        try:
+            if old_state is not None and ((value := float(old_state.state)) > 0):
+                self._attr_value = self._attr_native_value = value
+        except ValueError:
+            pass
+
+    @overrides
+    def my_climate_is_initialized(self):
+        """Called when the associated climate is initialized"""
+        self._attr_native_step = self.my_climate.target_temperature_step
+        self._attr_native_min_value = self.my_climate.min_temp
+        self._attr_native_max_value = self.my_climate.max_temp
+        return
+
+    @overrides
+    async def async_set_native_value(self, value: float) -> None:
+        """Change the value"""
+
+        if self.my_climate is None:
+            _LOGGER.warning(
+                "%s - cannot change temperature because VTherm is not initialized", self
+            )
+            return
+
+        float_value = float(value)
+        old_value = (
+            None if self._attr_native_value is None else float(self._attr_native_value)
+        )
+
+        if float_value == old_value:
+            return
+
+        self._attr_value = self._attr_native_value = float_value
+        self.async_write_ha_state()
+
+        # Update the VTherm temp
+        self.hass.create_task(
+            self.my_climate.service_set_preset_temperature(
+                self._canonical_preset_name,
+                self._attr_native_value if not self._is_away else None,
+                self._attr_native_value if self._is_away else None,
+            )
+        )
+
+        # We set the min, max and step from central config if relevant because it is possible
+        # that central config was not loaded at startup
+        self.init_min_max_step()
+
+    def __str__(self):
+        return f"VersatileThermostat-{self.name}"
+
+    @property
+    def native_unit_of_measurement(self) -> str | None:
+        """The unit of measurement"""
+        if not self.my_climate:
+            return self.hass.config.units.temperature_unit
+        return self.my_climate.temperature_unit
+
+    def init_min_max_step(self, entry_infos=None):
+        """Initialize min, max and step value from config or from central config"""
+        if self._has_central_main_attributes:
+            vthermapi: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api()
+            central_config = vthermapi.find_central_configuration()
+            if central_config:
+                self._attr_native_step = central_config.data.get(CONF_STEP_TEMPERATURE)
+                self._attr_native_min_value = central_config.data.get(CONF_TEMP_MIN)
+                self._attr_native_max_value = central_config.data.get(CONF_TEMP_MAX)
+
+                return
+
+        if entry_infos:
+            self._attr_native_step = entry_infos.get(
+                CONF_STEP_TEMPERATURE, DEFAULT_STEP
+            )
+            self._attr_native_min_value = entry_infos.get(
+                CONF_TEMP_MIN, DEFAULT_MIN_VALUE
+            )
+            self._attr_native_max_value = entry_infos.get(
+                CONF_TEMP_MAX, DEFAULT_MAX_VALUE
+            )
--- a/custom_components/versatile_thermostat/open_window_algorithm.py
+++ b/custom_components/versatile_thermostat/open_window_algorithm.py
@@ -26,20 +26,14 @@ MIN_NB_POINT = 4  # do not calculate slope until we have enough point
 class WindowOpenDetectionAlgorithm:
    """The class that implements the algorithm listed above"""

-    _alert_threshold: float
-    _end_alert_threshold: float
-    _last_slope: float
-    _last_datetime: datetime
-    _last_temperature: float
-    _nb_point: int
-
    def __init__(self, alert_threshold, end_alert_threshold) -> None:
        """Initalize a new algorithm with the both threshold"""
-        self._alert_threshold = alert_threshold
-        self._end_alert_threshold = end_alert_threshold
-        self._last_slope = None
-        self._last_datetime = None
-        self._nb_point = 0
+        self._alert_threshold: float = alert_threshold
+        self._end_alert_threshold: float = end_alert_threshold
+        self._last_slope: float | None = None
+        self._last_datetime: datetime = None
+        self._last_temperature: float | None = None
+        self._nb_point: int = 0

    def check_age_last_measurement(self, temperature, datetime_now) -> float:
        """ " Check if last measurement is old and add
--- a/custom_components/versatile_thermostat/prop_algorithm.py
+++ b/custom_components/versatile_thermostat/prop_algorithm.py
@@ -1,6 +1,9 @@
 """ The TPI calculation module """
+# pylint: disable='line-too-long'
 import logging

+from homeassistant.components.climate import HVACMode
+
 _LOGGER = logging.getLogger(__name__)

 PROPORTIONAL_FUNCTION_ATAN = "atan"
@@ -12,6 +15,11 @@ PROPORTIONAL_MIN_DURATION_SEC = 10
 FUNCTION_TYPE = [PROPORTIONAL_FUNCTION_ATAN, PROPORTIONAL_FUNCTION_LINEAR]


+def is_number(value):
+    """check if value is a number"""
+    return isinstance(value, (int, float))
+
+
 class PropAlgorithm:
    """This class aims to do all calculation of the Proportional alogorithm"""

@@ -22,16 +30,44 @@ class PropAlgorithm:
        tpi_coef_ext,
        cycle_min: int,
        minimal_activation_delay: int,
+        vtherm_entity_id: str = None,
+        max_on_percent: float = None,
    ) -> None:
        """Initialisation of the Proportional Algorithm"""
        _LOGGER.debug(
-            "Creation new PropAlgorithm function_type: %s, tpi_coef_int: %s, tpi_coef_ext: %s, cycle_min:%d, minimal_activation_delay:%d",  # pylint: disable=line-too-long
+            "%s - Creation new PropAlgorithm function_type: %s, tpi_coef_int: %s, tpi_coef_ext: %s, cycle_min:%d, minimal_activation_delay:%d",  # pylint: disable=line-too-long
+            vtherm_entity_id,
            function_type,
            tpi_coef_int,
            tpi_coef_ext,
            cycle_min,
            minimal_activation_delay,
        )
+
+        # Issue 506 - check parameters
+        if (
+            vtherm_entity_id is None
+            or not is_number(tpi_coef_int)
+            or not is_number(tpi_coef_ext)
+            or not is_number(cycle_min)
+            or not is_number(minimal_activation_delay)
+            or function_type != PROPORTIONAL_FUNCTION_TPI
+        ):
+            _LOGGER.error(
+                "%s - configuration is wrong. function_type=%s, entity_id is %s, tpi_coef_int is %s, tpi_coef_ext is %s, cycle_min is %s, minimal_activation_delay is %s",
+                vtherm_entity_id,
+                function_type,
+                vtherm_entity_id,
+                tpi_coef_int,
+                tpi_coef_ext,
+                cycle_min,
+                minimal_activation_delay,
+            )
+            raise TypeError(
+                "TPI parameters are not set correctly. VTherm will not work as expected. Please reconfigure it correctly. See previous log for values"
+            )
+
+        self._vtherm_entity_id = vtherm_entity_id
        self._function = function_type
        self._tpi_coef_int = tpi_coef_int
        self._tpi_coef_ext = tpi_coef_ext
@@ -43,27 +79,32 @@ class PropAlgorithm:
        self._off_time_sec = self._cycle_min * 60
        self._security = False
        self._default_on_percent = 0
+        self._max_on_percent = max_on_percent

    def calculate(
        self,
-        target_temp: float,
-        current_temp: float,
-        ext_current_temp: float,
-        cooling=False,
+        target_temp: float | None,
+        current_temp: float | None,
+        ext_current_temp: float | None,
+        hvac_mode: HVACMode,
    ):
        """Do the calculation of the duration"""
        if target_temp is None or current_temp is None:
-            _LOGGER.warning(
-                "Proportional algorithm: calculation is not possible cause target_temp or current_temp is null. Heating/cooling will be disabled"  # pylint: disable=line-too-long
+            log = _LOGGER.debug if hvac_mode == HVACMode.OFF else _LOGGER.warning
+            log(
+                "%s - Proportional algorithm: calculation is not possible cause target_temp (%s) or current_temp (%s) is null. Heating/cooling will be disabled. This could be normal at startup",  # pylint: disable=line-too-long
+                self._vtherm_entity_id,
+                target_temp,
+                current_temp,
            )
            self._calculated_on_percent = 0
        else:
-            if cooling:
+            if hvac_mode == HVACMode.COOL:
                delta_temp = current_temp - target_temp
                delta_ext_temp = (
-                    ext_current_temp
+                    ext_current_temp - target_temp
                    if ext_current_temp is not None
-                    else 0 - target_temp
+                    else 0
                )
            else:
                delta_temp = target_temp - current_temp
@@ -80,7 +121,8 @@ class PropAlgorithm:
                )
            else:
                _LOGGER.warning(
-                    "Proportional algorithm: unknown %s function. Heating will be disabled",
+                    "%s - Proportional algorithm: unknown %s function. Heating will be disabled",
+                    self._vtherm_entity_id,
                    self._function,
                )
                self._calculated_on_percent = 0
@@ -88,7 +130,8 @@ class PropAlgorithm:
        self._calculate_internal()

        _LOGGER.debug(
-            "heating percent calculated for current_temp %.1f, ext_current_temp %.1f and target_temp %.1f is %.2f, on_time is %d (sec), off_time is %d (sec)",  # pylint: disable=line-too-long
+            "%s - heating percent calculated for current_temp %.1f, ext_current_temp %.1f and target_temp %.1f is %.2f, on_time is %d (sec), off_time is %d (sec)",  # pylint: disable=line-too-long
+            self._vtherm_entity_id,
            current_temp if current_temp else -9999.0,
            ext_current_temp if ext_current_temp else -9999.0,
            target_temp if target_temp else -9999.0,
@@ -107,11 +150,12 @@ class PropAlgorithm:
            self._calculated_on_percent = 0

        if self._security:
-            _LOGGER.debug(
-                "Security is On using the default_on_percent %f",
-                self._default_on_percent,
-            )
            self._on_percent = self._default_on_percent
+            _LOGGER.info(
+                "%s - Security is On using the default_on_percent %f",
+                self._vtherm_entity_id,
+                self._on_percent,
+            )
        else:
            _LOGGER.debug(
                "Security is Off using the calculated_on_percent %f",
@@ -119,19 +163,23 @@ class PropAlgorithm:
            )
            self._on_percent = self._calculated_on_percent

+        if self._max_on_percent is not None and self._on_percent > self._max_on_percent:
+            _LOGGER.debug(
+                "%s - Heating period clamped to %s (instead of %s) due to max_on_percent setting.",
+                self._vtherm_entity_id,
+                self._max_on_percent,
+                self._on_percent,
+            )
+            self._on_percent = self._max_on_percent
+
        self._on_time_sec = self._on_percent * self._cycle_min * 60

        # Do not heat for less than xx sec
        if self._on_time_sec < self._minimal_activation_delay:
            if self._on_time_sec > 0:
                _LOGGER.info(
-                    "No heating period due to heating period too small (%f < %f)",
-                    self._on_time_sec,
-                    self._minimal_activation_delay,
-                )
-            else:
-                _LOGGER.debug(
-                    "No heating period due to heating period too small (%f < %f)",
+                    "%s - No heating period due to heating period too small (%f < %f)",
+                    self._vtherm_entity_id,
                    self._on_time_sec,
                    self._minimal_activation_delay,
                )
@@ -141,12 +189,18 @@ class PropAlgorithm:

    def set_security(self, default_on_percent: float):
        """Set a default value for on_percent (used for safety mode)"""
+        _LOGGER.info(
+            "%s - Proportional Algo - set security to ON", self._vtherm_entity_id
+        )
        self._security = True
        self._default_on_percent = default_on_percent
        self._calculate_internal()

    def unset_security(self):
        """Unset the safety mode"""
+        _LOGGER.info(
+            "%s - Proportional Algo - set security to OFF", self._vtherm_entity_id
+        )
        self._security = False
        self._calculate_internal()

--- a/custom_components/versatile_thermostat/select.py
+++ b/custom_components/versatile_thermostat/select.py
@@ -3,21 +3,20 @@
 """ Implements the VersatileThermostat select component """
 import logging

-from homeassistant.const import EVENT_HOMEASSISTANT_START
-from homeassistant.core import HomeAssistant, CoreState, callback
+from homeassistant.core import HomeAssistant

-from homeassistant.components.climate import ClimateEntity, DOMAIN as CLIMATE_DOMAIN
 from homeassistant.components.select import SelectEntity
 from homeassistant.helpers.device_registry import DeviceInfo, DeviceEntryType
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.helpers.entity_component import EntityComponent

 from custom_components.versatile_thermostat.base_thermostat import (
-    BaseThermostat,
    ConfigData,
 )
+
+from custom_components.versatile_thermostat.vtherm_api import VersatileThermostatAPI
+
 from .const import (
    DOMAIN,
    DEVICE_MANUFACTURER,
@@ -96,17 +95,20 @@ class CentralModeSelect(SelectEntity, RestoreEntity):
        if old_state is not None:
            self._attr_current_option = old_state.state

-        @callback
-        async def _async_startup_internal(*_):
-            _LOGGER.debug("%s - Calling async_startup_internal", self)
-            await self.notify_central_mode_change()
+        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self.hass)
+        api.register_central_mode_select(self)

-        if self.hass.state == CoreState.running:
-            await _async_startup_internal()
-        else:
-            self.hass.bus.async_listen_once(
-                EVENT_HOMEASSISTANT_START, _async_startup_internal
-            )
+        # @callback
+        # async def _async_startup_internal(*_):
+        #     _LOGGER.debug("%s - Calling async_startup_internal", self)
+        #     await self.notify_central_mode_change()
+        #
+        # if self.hass.state == CoreState.running:
+        #     await _async_startup_internal()
+        # else:
+        #     self.hass.bus.async_listen_once(
+        #         EVENT_HOMEASSISTANT_START, _async_startup_internal
+        #     )

    @overrides
    async def async_select_option(self, option: str) -> None:
@@ -120,19 +122,17 @@ class CentralModeSelect(SelectEntity, RestoreEntity):
            self._attr_current_option = option
            await self.notify_central_mode_change(old_central_mode=old_option)

+    @overrides
+    def select_option(self, option: str) -> None:
+        """Change the selected option"""
+        # Update the VTherms which have temperature in central config
+        self.hass.create_task(self.async_select_option(option))
+
    async def notify_central_mode_change(self, old_central_mode: str | None = None):
        """Notify all VTherm that the central_mode have change"""
+        api: VersatileThermostatAPI = VersatileThermostatAPI.get_vtherm_api(self.hass)
        # Update all VTherm states
-        component: EntityComponent[ClimateEntity] = self.hass.data[CLIMATE_DOMAIN]
-        for entity in component.entities:
-            if isinstance(entity, BaseThermostat):
-                _LOGGER.debug(
-                    "Changing the central_mode. We have find %s to update",
-                    entity.name,
-                )
-                await entity.check_central_mode(
-                    self._attr_current_option, old_central_mode
-                )
+        await api.notify_central_mode_change(old_central_mode)

    def __str__(self) -> str:
        return f"VersatileThermostat-{self.name}"
--- a/custom_components/versatile_thermostat/sensor.py
+++ b/custom_components/versatile_thermostat/sensor.py
@@ -3,7 +3,7 @@
 import logging
 import math

-from homeassistant.core import HomeAssistant, callback, Event, CoreState
+from homeassistant.core import HomeAssistant, callback, Event, CoreState, State

 from homeassistant.const import (
    UnitOfTime,
@@ -17,20 +17,19 @@ from homeassistant.components.sensor import (
    SensorEntity,
    SensorDeviceClass,
    SensorStateClass,
-    UnitOfTemperature,
 )
 from homeassistant.config_entries import ConfigEntry

 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.device_registry import DeviceInfo, DeviceEntryType
 from homeassistant.helpers.entity_component import EntityComponent
-from homeassistant.helpers.event import async_track_state_change_event
+from homeassistant.helpers.event import (
+    async_track_state_change_event,
+)

 from homeassistant.components.climate import (
    ClimateEntity,
    DOMAIN as CLIMATE_DOMAIN,
-    HVACAction,
-    HVACMode,
 )


@@ -49,7 +48,9 @@ from .const import (
    CONF_THERMOSTAT_CLIMATE,
    CONF_THERMOSTAT_TYPE,
    CONF_THERMOSTAT_CENTRAL_CONFIG,
-    CONF_ADD_CENTRAL_BOILER_CONTROL,
+    CONF_USE_CENTRAL_BOILER_FEATURE,
+    CONF_AUTO_REGULATION_VALVE,
+    CONF_AUTO_REGULATION_MODE,
    overrides,
 )

@@ -71,15 +72,17 @@ async def async_setup_entry(
    unique_id = entry.entry_id
    name = entry.data.get(CONF_NAME)
    vt_type = entry.data.get(CONF_THERMOSTAT_TYPE)
+    have_valve_regulation = (
+        entry.data.get(CONF_AUTO_REGULATION_MODE) == CONF_AUTO_REGULATION_VALVE
+    )

    entities = None

    if vt_type == CONF_THERMOSTAT_CENTRAL_CONFIG:
-        if entry.data.get(CONF_ADD_CENTRAL_BOILER_CONTROL):
+        if entry.data.get(CONF_USE_CENTRAL_BOILER_FEATURE):
            entities = [
                NbActiveDeviceForBoilerSensor(hass, unique_id, name, entry.data)
            ]
-            async_add_entities(entities, True)
    else:
        entities = [
            LastTemperatureSensor(hass, unique_id, name, entry.data),
@@ -100,14 +103,21 @@ async def async_setup_entry(
            entities.append(OnTimeSensor(hass, unique_id, name, entry.data))
            entities.append(OffTimeSensor(hass, unique_id, name, entry.data))

-        if entry.data.get(CONF_THERMOSTAT_TYPE) == CONF_THERMOSTAT_VALVE:
+        if (
+            entry.data.get(CONF_THERMOSTAT_TYPE) == CONF_THERMOSTAT_VALVE
+            or have_valve_regulation
+        ):
            entities.append(ValveOpenPercentSensor(hass, unique_id, name, entry.data))

-        if entry.data.get(CONF_THERMOSTAT_TYPE) == CONF_THERMOSTAT_CLIMATE:
+        if (
+            entry.data.get(CONF_THERMOSTAT_TYPE) == CONF_THERMOSTAT_CLIMATE
+            and not have_valve_regulation
+        ):
            entities.append(
                RegulatedTemperatureSensor(hass, unique_id, name, entry.data)
            )

+    if entities:
        async_add_entities(entities, True)


@@ -123,17 +133,17 @@ class EnergySensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

-        if math.isnan(self.my_climate.total_energy) or math.isinf(
-            self.my_climate.total_energy
-        ):
+        energy = self.my_climate.total_energy
+        if energy is None:
+            return
+
+        if math.isnan(energy) or math.isinf(energy):
            raise ValueError(f"Sensor has illegal state {self.my_climate.total_energy}")

        old_state = self._attr_native_value
-        self._attr_native_value = round(
-            self.my_climate.total_energy, self.suggested_display_precision
-        )
+        self._attr_native_value = round(energy, self.suggested_display_precision)
        if old_state != self._attr_native_value:
            self.async_write_ha_state()
        return
@@ -178,7 +188,7 @@ class MeanPowerSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        if math.isnan(float(self.my_climate.mean_cycle_power)) or math.isinf(
            self.my_climate.mean_cycle_power
@@ -235,7 +245,7 @@ class OnPercentSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        on_percent = (
            float(self.my_climate.proportional_algorithm.on_percent)
@@ -290,7 +300,7 @@ class ValveOpenPercentSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_native_value
        self._attr_native_value = self.my_climate.valve_open_percent
@@ -332,7 +342,7 @@ class OnTimeSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        on_time = (
            float(self.my_climate.proportional_algorithm.on_time_sec)
@@ -381,7 +391,7 @@ class OffTimeSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        off_time = (
            float(self.my_climate.proportional_algorithm.off_time_sec)
@@ -429,7 +439,7 @@ class LastTemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_native_value
        self._attr_native_value = self.my_climate.last_temperature_measure
@@ -458,7 +468,7 @@ class LastExtTemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        old_state = self._attr_native_value
        self._attr_native_value = self.my_climate.last_ext_temperature_measure
@@ -487,7 +497,7 @@ class TemperatureSlopeSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        last_slope = self.my_climate.last_temperature_slope
        if last_slope is None:
@@ -540,7 +550,7 @@ class RegulatedTemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        new_temp = self.my_climate.regulated_target_temp
        if new_temp is None:
@@ -570,7 +580,7 @@ class RegulatedTemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @property
    def native_unit_of_measurement(self) -> str | None:
        if not self.my_climate:
-            return UnitOfTemperature.CELSIUS
+            return self.hass.config.units.temperature_unit
        return self.my_climate.temperature_unit

    @property
@@ -591,7 +601,7 @@ class EMATemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @callback
    async def async_my_climate_changed(self, event: Event = None):
        """Called when my climate have change"""
-        _LOGGER.debug("%s - climate state change", self._attr_unique_id)
+        # _LOGGER.debug("%s - climate state change", self._attr_unique_id)

        new_ema = self.my_climate.ema_temperature
        if new_ema is None:
@@ -621,7 +631,7 @@ class EMATemperatureSensor(VersatileThermostatBaseEntity, SensorEntity):
    @property
    def native_unit_of_measurement(self) -> str | None:
        if not self.my_climate:
-            return UnitOfTemperature.CELSIUS
+            return self.hass.config.units.temperature_unit
        return self.my_climate.temperature_unit

    @property
@@ -634,6 +644,10 @@ class NbActiveDeviceForBoilerSensor(SensorEntity):
    """Representation of the threshold of the number of VTherm
    which should be active to activate the boiler"""

+    _entity_component_unrecorded_attributes = SensorEntity._entity_component_unrecorded_attributes.union(  # pylint: disable=protected-access
+        frozenset({"active_device_ids"})
+    )
+
    def __init__(self, hass: HomeAssistant, unique_id, name, entry_infos) -> None:
        """Initialize the energy sensor"""
        self._hass = hass
@@ -643,6 +657,14 @@ class NbActiveDeviceForBoilerSensor(SensorEntity):
        self._attr_unique_id = "nb_device_active_boiler"
        self._attr_value = self._attr_native_value = None  # default value
        self._entities = []
+        self._attr_active_device_ids = []  # Holds the entity ids of active devices
+
+    @property
+    def extra_state_attributes(self) -> dict:
+        """Return additional attributes for the sensor."""
+        return {
+            "active_device_ids": self._attr_active_device_ids,
+        }

    @property
    def icon(self) -> str | None:
@@ -698,7 +720,7 @@ class NbActiveDeviceForBoilerSensor(SensorEntity):
        for entity in component.entities:
            if isinstance(entity, BaseThermostat) and entity.is_used_by_central_boiler:
                self._entities.append(entity)
-                for under in entity.underlying_entities:
+                for under in entity.activable_underlying_entities:
                    underlying_entities_id.append(under.entity_id)
        if len(underlying_entities_id) > 0:
            # Arme l'écoute de la première entité
@@ -708,36 +730,86 @@ class NbActiveDeviceForBoilerSensor(SensorEntity):
                self.calculate_nb_active_devices,
            )
            _LOGGER.info(
-                "%s - the underlyings that could controls the central boiler are %s",
+                "%s - the underlyings that could control the central boiler are %s",
                self,
                underlying_entities_id,
            )
            self.async_on_remove(listener_cancel)
        else:
-            _LOGGER.debug("%s - no VTherm could controls the central boiler", self)
+            _LOGGER.debug("%s - no VTherm could control the central boiler", self)

        await self.calculate_nb_active_devices(None)

-    async def calculate_nb_active_devices(self, _):
+    async def calculate_nb_active_devices(self, event: Event):
        """Calculate the number of active VTherm that have an
-        influence on central boiler"""
+        influence on the central boiler and update the list of active device names."""

-        _LOGGER.debug("%s - calculating the number of active VTherm", self)
-        nb_active = 0
-        for entity in self._entities:
-            _LOGGER.debug(
-                "Examining the hvac_action of %s",
-                entity.name,
+        # _LOGGER.debug("%s- calculate_nb_active_devices - the event is %s ", self, event)
+
+        if event is not None:
+            new_state: State = event.data.get("new_state")
+            # _LOGGER.debug(
+            #     "%s - calculate_nb_active_devices new_state is %s", self, new_state
+            # )
+            if not new_state:
+                return
+
+            old_state: State = event.data.get("old_state")
+
+            # For underlying climate, we need to observe also the hvac_action if available
+            new_hvac_action = new_state.attributes.get("hvac_action")
+            old_hvac_action = (
+                old_state.attributes.get("hvac_action")
+                if old_state is not None
+                else None
            )
+
+            # Filter events that are not interested for us
            if (
-                entity.hvac_mode == HVACMode.HEAT
-                and entity.hvac_action == HVACAction.HEATING
+                old_state is not None
+                and new_state.state == old_state.state
+                and new_hvac_action == old_hvac_action
+                # issue 698 - force recalculation when underlying climate doesn't have any hvac_action
+                and new_hvac_action is not None
            ):
-                for under in entity.underlying_entities:
-                    nb_active += 1 if under.is_device_active else 0
+                # A false state change
+                return
+
+            _LOGGER.debug(
+                "%s - calculating the number of active underlying device for boiler activation. change change from %s to %s",
+                self,
+                old_state,
+                new_state,
+            )
+        else:
+            _LOGGER.debug(
+                "%s - calculating the number of active underlying device for boiler activation. First time calculation",
+                self,
+            )
+
+        nb_active = 0
+        active_device_ids = []
+
+        for entity in self._entities:
+            device_actives = entity.device_actives
+            _LOGGER.debug(
+                "After examining the hvac_action of %s, device_actives is %s",
+                entity.name,
+                device_actives,
+            )
+
+            nb_active += len(device_actives)
+            active_device_ids.extend(device_actives)

        self._attr_native_value = nb_active
+        self._attr_active_device_ids = active_device_ids
+
        self.async_write_ha_state()

+    @property
+    def active_device_ids(self) -> list:
+        """Get the list of active device id"""
+        return self._attr_active_device_ids
+
    def __str__(self):
        return f"VersatileThermostat-{self.name}"
--- a/custom_components/versatile_thermostat/strings.json
+++ b/custom_components/versatile_thermostat/strings.json
@@ -12,80 +12,89 @@
          "thermostat_type": "Only one central configuration type is possible"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Configure your thermostat. You will be able to finalize the configuration when all required parameters are entered.",
+        "menu_options": {
+          "main": "Main attributes",
+          "central_boiler": "Central boiler",
+          "type": "Underlyings",
+          "tpi": "TPI parameters",
+          "features": "Features",
+          "presets": "Presets",
+          "window": "Window detection",
+          "motion": "Motion detection",
+          "power": "Power management",
+          "presence": "Presence detection",
+          "advanced": "Advanced parameters",
+          "auto_start_stop": "Auto start and stop",
+          "valve_regulation": "Valve regulation configuration",
+          "finalize": "All done",
+          "configuration_not_complete": "Configuration not complete"
+        }
+      },
      "main": {
        "title": "Add new Versatile Thermostat",
        "description": "Main mandatory attributes",
        "data": {
          "name": "Name",
          "thermostat_type": "Thermostat type",
-          "temperature_sensor_entity_id": "Temperature sensor entity id",
+          "temperature_sensor_entity_id": "Room temperature",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature datetime",
          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id",
          "cycle_min": "Cycle duration (minutes)",
-          "temp_min": "Minimal temperature allowed",
-          "temp_max": "Maximal temperature allowed",
+          "temp_min": "Minimum temperature allowed",
+          "temp_max": "Maximum temperature allowed",
          "step_temperature": "Temperature step",
          "device_power": "Device power",
-          "use_central_mode": "Enable the control by central entity (need central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_central_mode": "Enable the control by central entity (requires central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_main_central_config": "Use additional central main configuration. Check to use the central main configuration (outdoor temperature, min, max, step, ...).",
+          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature sensor entity id. Should be datetime sensor",
+          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+        }
+      },
+      "features": {
+        "title": "Features",
+        "description": "Thermostat features",
+        "data": {
          "use_window_feature": "Use window detection",
          "use_motion_feature": "Use motion detection",
          "use_power_feature": "Use power management",
          "use_presence_feature": "Use presence detection",
-          "use_main_central_config": "Use central main configuration. Check to use the central main configuration. Uncheck to use a specific main configuration for this VTherm",
-          "add_central_boiler_control": "Add a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after seecting this checkbox to take effect. If one VTherm need heating, the boiler will be turned on. If no VTherm needs heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the next configuration page",
-          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+          "use_central_boiler_feature": "Use a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after selecting this checkbox to take effect. If one VTherm requires heating, the boiler will be turned on. If no VTherm requires heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the related configuration page",
+          "use_auto_start_stop_feature": "Use the auto start and stop feature"
        }
      },
      "type": {
        "title": "Linked entities",
        "description": "Linked entities attributes",
        "data": {
-          "heater_entity_id": "1st heater switch",
-          "heater_entity2_id": "2nd heater switch",
-          "heater_entity3_id": "3rd heater switch",
-          "heater_entity4_id": "4th heater switch",
+          "underlying_entity_ids": "The device(s) to be controlled",
          "heater_keep_alive": "Switch keep-alive interval in seconds",
          "proportional_function": "Algorithm",
-          "climate_entity_id": "1st underlying climate",
-          "climate_entity2_id": "2nd underlying climate",
-          "climate_entity3_id": "3rd underlying climate",
-          "climate_entity4_id": "4th underlying climate",
          "ac_mode": "AC mode",
-          "valve_entity_id": "1st valve number",
-          "valve_entity2_id": "2nd valve number",
-          "valve_entity3_id": "3rd valve number",
-          "valve_entity4_id": "4th valve number",
          "auto_regulation_mode": "Self-regulation",
          "auto_regulation_dtemp": "Regulation threshold",
-          "auto_regulation_periode_min": "Regulation minimal period",
+          "auto_regulation_periode_min": "Regulation minimum period",
          "auto_regulation_use_device_temp": "Use internal temperature of the underlying",
          "inverse_switch_command": "Inverse switch command",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
-          "heater_entity_id": "Mandatory heater entity id",
-          "heater_entity2_id": "Optional 2nd Heater entity id. Leave empty if not used",
-          "heater_entity3_id": "Optional 3rd Heater entity id. Leave empty if not used",
-          "heater_entity4_id": "Optional 4th Heater entity id. Leave empty if not used",
+          "underlying_entity_ids": "The device(s) to be controlled - 1 is required",
          "heater_keep_alive": "Optional heater switch state refresh interval. Leave empty if not required.",
          "proportional_function": "Algorithm to use (TPI is the only one for now)",
-          "climate_entity_id": "Underlying climate entity id",
-          "climate_entity2_id": "2nd underlying climate entity id",
-          "climate_entity3_id": "3rd underlying climate entity id",
-          "climate_entity4_id": "4th underlying climate entity id",
          "ac_mode": "Use the Air Conditioning (AC) mode",
-          "valve_entity_id": "1st valve number entity id",
-          "valve_entity2_id": "2nd valve number entity id",
-          "valve_entity3_id": "3rd valve number entity id",
-          "valve_entity4_id": "4th valve number entity id",
          "auto_regulation_mode": "Auto adjustment of the target temperature",
          "auto_regulation_dtemp": "The threshold in ° (or % for valve) under which the temperature change will not be sent",
          "auto_regulation_periode_min": "Duration in minutes between two regulation update",
          "auto_regulation_use_device_temp": "Use the eventual internal temperature sensor of the underlying to speedup the self-regulation",
          "inverse_switch_command": "For switch with pilot wire and diode you may need to inverse the command",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -104,26 +113,9 @@
      },
      "presets": {
        "title": "Presets",
-        "description": "For each preset set the target temperature (0 to ignore preset)",
+        "description": "Select if the thermostat will use central preset - deselect for the thermostat to have its own presets",
        "data": {
-          "eco_temp": "Eco preset",
-          "comfort_temp": "Comfort preset",
-          "boost_temp": "Boost preset",
-          "frost_temp": "Frost protection preset",
-          "eco_ac_temp": "Eco preset for AC mode",
-          "comfort_ac_temp": "Comfort preset for AC mode",
-          "boost_ac_temp": "Boost preset for AC mode",
          "use_presets_central_config": "Use central presets configuration"
-        },
-        "data_description": {
-          "eco_temp": "Temperature in Eco preset",
-          "comfort_temp": "Temperature in Comfort preset",
-          "boost_temp": "Temperature in Boost preset",
-          "frost_temp": "Temperature in Frost protection preset",
-          "eco_ac_temp": "Temperature in Eco preset for AC mode",
-          "comfort_ac_temp": "Temperature in Comfort preset for AC mode",
-          "boost_ac_temp": "Temperature in Boost preset for AC mode",
-          "use_presets_central_config": "Check to use the central presets configuration. Uncheck to use a specific presets configuration for this VTherm"
        }
      },
      "window": {
@@ -144,8 +136,8 @@
          "window_auto_open_threshold": "Recommended value: between 3 and 10. Leave empty if automatic window open detection is not used",
          "window_auto_close_threshold": "Recommended value: 0. Leave empty if automatic window open detection is not used",
          "window_auto_max_duration": "Recommended value: 60 (one hour). Leave empty if automatic window open detection is not used",
-          "use_window_central_config": "Check to use the central window configuration. Uncheck to use a specific window configuration for this VTherm",
-          "window_action": "Action to do if window is deteted as open"
+          "use_window_central_config": "Select to use the central window configuration. Deselect to use a specific window configuration for this VTherm",
+          "window_action": "Action to perform if window is deteted as open"
        }
      },
      "motion": {
@@ -170,7 +162,7 @@
      },
      "power": {
        "title": "Power management",
-        "description": "Power management attributes.\nGives the power and max power sensor of your home.\nThen specify the power consumption of the heater when on.\nAll sensors and device power should have the same unit (kW or W).",
+        "description": "Power management attributes.\nGives the power and max power sensor of your home.\nSpecify the power consumption of the heater when on.\nAll sensors and device power should use the same unit (kW or W).",
        "data": {
          "power_sensor_entity_id": "Power",
          "max_power_sensor_entity_id": "Max power",
@@ -189,51 +181,64 @@
        "description": "Presence management attributes.\nGives the a presence sensor of your home (true is someone is present) and give the corresponding temperature preset setting.",
        "data": {
          "presence_sensor_entity_id": "Presence sensor",
-          "eco_away_temp": "Eco preset",
-          "comfort_away_temp": "Comfort preset",
-          "boost_away_temp": "Boost preset",
-          "frost_away_temp": "Frost protection preset",
-          "eco_ac_away_temp": "Eco preset in AC mode",
-          "comfort_ac_away_temp": "Comfort preset in AC mode",
-          "boost_ac_away_temp": "Boost pres et in AC mode",
-          "use_presence_central_config": "Use central presence configuration"
+          "use_presence_central_config": "Use central presence temperature configuration. Deselect to use specific temperature entities"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Presence sensor entity id",
-          "eco_away_temp": "Temperature in Eco preset when no presence",
-          "comfort_away_temp": "Temperature in Comfort preset when no presence",
-          "boost_away_temp": "Temperature in Boost preset when no presence",
-          "frost_away_temp": "Temperature in Frost protection preset when no presence",
-          "eco_ac_away_temp": "Temperature in Eco preset when no presence in AC mode",
-          "comfort_ac_away_temp": "Temperature in Comfort preset when no presence in AC mode",
-          "boost_ac_away_temp": "Temperature in Boost preset when no presence in AC mode",
-          "use_presence_central_config": "Check to use the central presence configuration. Uncheck to use a specific presence configuration for this VTherm"
+          "presence_sensor_entity_id": "Presence sensor entity id"
        }
      },
      "advanced": {
        "title": "Advanced parameters",
        "description": "Configuration of advanced parameters. Leave the default values if you don't know what you are doing.\nThese parameters can lead to very poor temperature control or bad power regulation.",
        "data": {
-          "minimal_activation_delay": "Minimal activation delay",
+          "minimal_activation_delay": "Minimum activation delay",
          "security_delay_min": "Safety delay (in minutes)",
-          "security_min_on_percent": "Minimal power percent to enable safety mode",
+          "security_min_on_percent": "Minimum power percent to enable safety mode",
          "security_default_on_percent": "Power percent to use in safety mode",
          "use_advanced_central_config": "Use central advanced configuration"
        },
        "data_description": {
          "minimal_activation_delay": "Delay in seconds under which the equipment will not be activated",
          "security_delay_min": "Maximum allowed delay in minutes between two temperature measurements. Above this delay the thermostat will turn to a safety off state",
-          "security_min_on_percent": "Minimal heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
+          "security_min_on_percent": "Minimum heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
          "security_default_on_percent": "The default heating power percent value in safety preset. Set to 0 to switch off heater in safety preset",
          "use_advanced_central_config": "Check to use the central advanced configuration. Uncheck to use a specific advanced configuration for this VTherm"
        }
+      },
+      "central_boiler": {
+        "title": "Control of the central boiler",
+        "description": "Enter the services to call to turn on/off the central boiler. Leave blank if no service call is to be made (in this case, you will have to manage the turning on/off of your central boiler yourself). The service called must be formatted as follows: `entity_id/service_name[/attribute:value]` (/attribute:value is optional)\nFor example:\n- to turn on a switch: `switch.controle_chaudiere/switch.turn_on`\n- to turn off a switch: `switch.controle_chaudiere/switch.turn_off`\n- to program the boiler to 25° and thus force its ignition: `climate.thermostat_chaudiere/climate.set_temperature/temperature:25`\n- to send 10° to the boiler and thus force its extinction: `climate.thermostat_chaudiere/climate.set_temperature/temperature:10`",
+        "data": {
+          "central_boiler_activation_service": "Command to turn-on",
+          "central_boiler_deactivation_service": "Command to turn-off"
+        },
+        "data_description": {
+          "central_boiler_activation_service": "Command to turn-on the central boiler formatted like entity_id/service_name[/attribut:valeur]",
+          "central_boiler_deactivation_service": "Command to turn-off the central boiler formatted like entity_id/service_name[/attribut:valeur]"
+        }
+      },
+      "valve_regulation": {
+        "title": "Self-regulation with valve",
+        "description": "Configuration for self-regulation with direct control of the valve",
+        "data": {
+          "offset_calibration_entity_ids": "Offset calibration entities",
+          "opening_degree_entity_ids": "Opening degree entities",
+          "closing_degree_entity_ids": "Closing degree entities",
+          "proportional_function": "Algorithm"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "The list of the 'offset calibration' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "opening_degree_entity_ids": "The list of the 'opening degree' entities. There should be one per underlying climate entities",
+          "closing_degree_entity_ids": "The list of the 'closing degree' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "proportional_function": "Algorithm to use (TPI is the only one for now)"
+        }
      }
    },
    "error": {
      "unknown": "Unexpected error",
      "unknown_entity": "Unknown entity id",
      "window_open_detection_method": "Only one window open detection method should be used. Use either window sensor or automatic detection through temperature threshold but not both",
-      "no_central_config": "You cannot check 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it."
+      "no_central_config": "You cannot select 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it."
    },
    "abort": {
      "already_configured": "Device is already configured"
@@ -251,80 +256,89 @@
          "thermostat_type": "Only one central configuration type is possible"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Configure your thermostat. You will be able to finalize the configuration when all required parameters are entered.",
+        "menu_options": {
+          "main": "Main attributes",
+          "central_boiler": "Central boiler",
+          "type": "Underlyings",
+          "tpi": "TPI parameters",
+          "features": "Features",
+          "presets": "Presets",
+          "window": "Window detection",
+          "motion": "Motion detection",
+          "power": "Power management",
+          "presence": "Presence detection",
+          "advanced": "Advanced parameters",
+          "auto_start_stop": "Auto start and stop",
+          "valve_regulation": "Valve regulation configuration",
+          "finalize": "All done",
+          "configuration_not_complete": "Configuration not complete"
+        }
+      },
      "main": {
        "title": "Main - {name}",
        "description": "Main mandatory attributes",
        "data": {
          "name": "Name",
          "thermostat_type": "Thermostat type",
-          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "temperature_sensor_entity_id": "Room temperature",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature datetime",
          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id",
          "cycle_min": "Cycle duration (minutes)",
-          "temp_min": "Minimal temperature allowed",
-          "temp_max": "Maximal temperature allowed",
+          "temp_min": "Minimum temperature allowed",
+          "temp_max": "Maximum temperature allowed",
          "step_temperature": "Temperature step",
          "device_power": "Device power",
-          "use_central_mode": "Enable the control by central entity (need central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_central_mode": "Enable the control by central entity (requires central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_main_central_config": "Use additional central main configuration. Check to use the central main configuration (outdoor temperature, min, max, step, ...).",
+          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature sensor entity id. Should be datetime sensor",
+          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+        }
+      },
+      "features": {
+        "title": "Features - {name}",
+        "description": "Thermostat features",
+        "data": {
          "use_window_feature": "Use window detection",
          "use_motion_feature": "Use motion detection",
          "use_power_feature": "Use power management",
          "use_presence_feature": "Use presence detection",
-          "use_main_central_config": "Use central main configuration. Check to use the central main configuration. Uncheck to use a specific main configuration for this VTherm",
-          "add_central_boiler_control": "Add a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after seecting this checkbox to take effect. If one VTherm need heating, the boiler will be turned on. If no VTherm needs heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the next configuration page",
-          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+          "use_central_boiler_feature": "Use a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after selecting this checkbox to take effect. If one VTherm requires heating, the boiler will be turned on. If no VTherm requires heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the related configuration page",
+          "use_auto_start_stop_feature": "Use the auto start and stop feature"
        }
      },
      "type": {
        "title": "Entities - {name}",
        "description": "Linked entities attributes",
        "data": {
-          "heater_entity_id": "1st heater switch",
-          "heater_entity2_id": "2nd heater switch",
-          "heater_entity3_id": "3rd heater switch",
-          "heater_entity4_id": "4th heater switch",
+          "underlying_entity_ids": "The device(s) to be controlled",
          "heater_keep_alive": "Switch keep-alive interval in seconds",
          "proportional_function": "Algorithm",
-          "climate_entity_id": "1st underlying climate",
-          "climate_entity2_id": "2nd underlying climate",
-          "climate_entity3_id": "3rd underlying climate",
-          "climate_entity4_id": "4th underlying climate",
          "ac_mode": "AC mode",
-          "valve_entity_id": "1st valve number",
-          "valve_entity2_id": "2nd valve number",
-          "valve_entity3_id": "3rd valve number",
-          "valve_entity4_id": "4th valve number",
          "auto_regulation_mode": "Self-regulation",
          "auto_regulation_dtemp": "Regulation threshold",
-          "auto_regulation_periode_min": "Regulation minimal period",
+          "auto_regulation_periode_min": "Regulation minimum period",
          "auto_regulation_use_device_temp": "Use internal temperature of the underlying",
          "inverse_switch_command": "Inverse switch command",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
-          "heater_entity_id": "Mandatory heater entity id",
-          "heater_entity2_id": "Optional 2nd Heater entity id. Leave empty if not used",
-          "heater_entity3_id": "Optional 3rd Heater entity id. Leave empty if not used",
-          "heater_entity4_id": "Optional 4th Heater entity id. Leave empty if not used",
+          "underlying_entity_ids": "The device(s) to be controlled - 1 is required",
          "heater_keep_alive": "Optional heater switch state refresh interval. Leave empty if not required.",
          "proportional_function": "Algorithm to use (TPI is the only one for now)",
-          "climate_entity_id": "Underlying climate entity id",
-          "climate_entity2_id": "2nd underlying climate entity id",
-          "climate_entity3_id": "3rd underlying climate entity id",
-          "climate_entity4_id": "4th underlying climate entity id",
          "ac_mode": "Use the Air Conditioning (AC) mode",
-          "valve_entity_id": "1st valve number entity id",
-          "valve_entity2_id": "2nd valve number entity id",
-          "valve_entity3_id": "3rd valve number entity id",
-          "valve_entity4_id": "4th valve number entity id",
          "auto_regulation_mode": "Auto adjustment of the target temperature",
          "auto_regulation_dtemp": "The threshold in ° (or % for valve) under which the temperature change will not be sent",
          "auto_regulation_periode_min": "Duration in minutes between two regulation update",
          "auto_regulation_use_device_temp": "Use the eventual internal temperature sensor of the underlying to speedup the self-regulation",
          "inverse_switch_command": "For switch with pilot wire and diode you may need to invert the command",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -343,26 +357,9 @@
      },
      "presets": {
        "title": "Presets - {name}",
-        "description": "For each preset set the target temperature (0 to ignore preset)",
+        "description": "Check if the thermostat will use central presets. Uncheck and the thermostat will have its own preset entities",
        "data": {
-          "eco_temp": "Eco preset",
-          "comfort_temp": "Comfort preset",
-          "boost_temp": "Boost preset",
-          "frost_temp": "Frost protection preset",
-          "eco_ac_temp": "Eco preset for AC mode",
-          "comfort_ac_temp": "Comfort preset for AC mode",
-          "boost_ac_temp": "Boost preset for AC mode",
          "use_presets_central_config": "Use central presets configuration"
-        },
-        "data_description": {
-          "eco_temp": "Temperature in Eco preset",
-          "comfort_temp": "Temperature in Comfort preset",
-          "boost_temp": "Temperature in Boost preset",
-          "frost_temp": "Temperature in Frost protection preset",
-          "eco_ac_temp": "Temperature in Eco preset for AC mode",
-          "comfort_ac_temp": "Temperature in Comfort preset for AC mode",
-          "boost_ac_temp": "Temperature in Boost preset for AC mode",
-          "use_presets_central_config": "Check to use the central presets configuration. Uncheck to use a specific presets configuration for this VTherm"
        }
      },
      "window": {
@@ -428,44 +425,57 @@
        "description": "Presence management attributes.\nGives the a presence sensor of your home (true is someone is present) and give the corresponding temperature preset setting.",
        "data": {
          "presence_sensor_entity_id": "Presence sensor",
-          "eco_away_temp": "Eco away preset",
-          "comfort_away_temp": "Comfort away preset",
-          "boost_away_temp": "Boost away preset",
-          "frost_away_temp": "Frost protection preset",
-          "eco_ac_away_temp": "Eco away preset in AC mode",
-          "comfort_ac_away_temp": "Comfort away preset in AC mode",
-          "boost_ac_away_temp": "Boost away preset in AC mode",
-          "use_presence_central_config": "Use central presence configuration"
+          "use_presence_central_config": "Use central presence temperature configuration. Uncheck to use specific temperature entities"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Presence sensor entity id",
-          "eco_away_temp": "Temperature in Eco preset when no presence",
-          "comfort_away_temp": "Temperature in Comfort preset when no presence",
-          "boost_away_temp": "Temperature in Boost preset when no presence",
-          "frost_away_temp": "Temperature in Frost protection preset when no presence",
-          "eco_ac_away_temp": "Temperature in Eco preset when no presence in AC mode",
-          "comfort_ac_away_temp": "Temperature in Comfort preset when no presence in AC mode",
-          "boost_ac_away_temp": "Temperature in Boost preset when no presence in AC mode",
-          "use_presence_central_config": "Check to use the central presence configuration. Uncheck to use a specific presence configuration for this VTherm"
+          "presence_sensor_entity_id": "Presence sensor entity id"
        }
      },
      "advanced": {
        "title": "Advanced - {name}",
        "description": "Advanced parameters. Leave the default values if you don't know what you are doing.\nThese parameters can lead to very poor temperature control or bad power regulation.",
        "data": {
-          "minimal_activation_delay": "Minimal activation delay",
+          "minimal_activation_delay": "Minimum activation delay",
          "security_delay_min": "Safety delay (in minutes)",
-          "security_min_on_percent": "Minimal power percent to enable safety mode",
+          "security_min_on_percent": "Minimum power percent to enable safety mode",
          "security_default_on_percent": "Power percent to use in safety mode",
          "use_advanced_central_config": "Use central advanced configuration"
        },
        "data_description": {
          "minimal_activation_delay": "Delay in seconds under which the equipment will not be activated",
          "security_delay_min": "Maximum allowed delay in minutes between two temperature measurements. Above this delay the thermostat will turn to a safety off state",
-          "security_min_on_percent": "Minimal heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
+          "security_min_on_percent": "Minimum heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
          "security_default_on_percent": "The default heating power percent value in safety preset. Set to 0 to switch off heater in safety preset",
          "use_advanced_central_config": "Check to use the central advanced configuration. Uncheck to use a specific advanced configuration for this VTherm"
        }
+      },
+      "central_boiler": {
+        "title": "Control of the central boiler - {name}",
+        "description": "Enter the services to call to turn on/off the central boiler. Leave blank if no service call is to be made (in this case, you will have to manage the turning on/off of your central boiler yourself). The service called must be formatted as follows: `entity_id/service_name[/attribute:value]` (/attribute:value is optional)\nFor example:\n- to turn on a switch: `switch.controle_chaudiere/switch.turn_on`\n- to turn off a switch: `switch.controle_chaudiere/switch.turn_off`\n- to program the boiler to 25° and thus force its ignition: `climate.thermostat_chaudiere/climate.set_temperature/temperature:25`\n- to send 10° to the boiler and thus force its extinction: `climate.thermostat_chaudiere/climate.set_temperature/temperature:10`",
+        "data": {
+          "central_boiler_activation_service": "Command to turn-on",
+          "central_boiler_deactivation_service": "Command to turn-off"
+        },
+        "data_description": {
+          "central_boiler_activation_service": "Command to turn-on the central boiler formatted like entity_id/service_name[/attribut:valeur]",
+          "central_boiler_deactivation_service": "Command to turn-off the central boiler formatted like entity_id/service_name[/attribut:valeur]"
+        }
+      },
+      "valve_regulation": {
+        "title": "Self-regulation with valve - {name}",
+        "description": "Configuration for self-regulation with direct control of the valve",
+        "data": {
+          "offset_calibration_entity_ids": "Offset calibration entities",
+          "opening_degree_entity_ids": "Opening degree entities",
+          "closing_degree_entity_ids": "Closing degree entities",
+          "proportional_function": "Algorithm"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "The list of the 'offset calibration' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "opening_degree_entity_ids": "The list of the 'opening degree' entities. There should be one per underlying climate entities",
+          "closing_degree_entity_ids": "The list of the 'closing degree' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "proportional_function": "Algorithm to use (TPI is the only one for now)"
+        }
      }
    },
    "error": {
@@ -473,7 +483,8 @@
      "unknown_entity": "Unknown entity id",
      "window_open_detection_method": "Only one window open detection method should be used. Use either window sensor or automatic detection through temperature threshold but not both",
      "no_central_config": "You cannot check 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it.",
-      "service_configuration_format": "The format of the service configuration is wrong"
+      "service_configuration_format": "The format of the service configuration is wrong",
+      "valve_regulation_nb_entities_incorrect": "The number of valve entities for valve regulation should be equal to the number of underlyings"
    },
    "abort": {
      "already_configured": "Device is already configured"
@@ -495,7 +506,8 @@
        "auto_regulation_medium": "Medium",
        "auto_regulation_light": "Light",
        "auto_regulation_expert": "Expert",
-        "auto_regulation_none": "No auto-regulation"
+        "auto_regulation_none": "No auto-regulation",
+        "auto_regulation_valve": "Direct control of valve"
      }
    },
    "auto_fan_mode": {
@@ -522,6 +534,14 @@
        "comfort": "Comfort",
        "boost": "Boost"
      }
+    },
+    "auto_start_stop": {
+      "options": {
+        "auto_start_stop_none": "No auto start/stop",
+        "auto_start_stop_slow": "Slow detection",
+        "auto_start_stop_medium": "Medium detection",
+        "auto_start_stop_fast": "Fast detection"
+      }
    }
  },
  "entity": {
@@ -532,11 +552,59 @@
            "state": {
              "power": "Shedding",
              "security": "Safety",
-              "none": "Manual"
+              "none": "Manual",
+              "frost": "Frost"
            }
          }
        }
      }
+    },
+    "number": {
+      "frost_temp": {
+        "name": "Frost"
+      },
+      "eco_temp": {
+        "name": "Eco"
+      },
+      "comfort_temp": {
+        "name": "Comfort"
+      },
+      "boost_temp": {
+        "name": "Boost"
+      },
+      "frost_ac_temp": {
+        "name": "Frost ac"
+      },
+      "eco_ac_temp": {
+        "name": "Eco ac"
+      },
+      "comfort_ac_temp": {
+        "name": "Comfort ac"
+      },
+      "boost_ac_temp": {
+        "name": "Boost ac"
+      },
+      "frost_away_temp": {
+        "name": "Frost away"
+      },
+      "eco_away_temp": {
+        "name": "Eco away"
+      },
+      "comfort_away_temp": {
+        "name": "Comfort away"
+      },
+      "boost_away_temp": {
+        "name": "Boost away"
+      },
+      "eco_ac_away_temp": {
+        "name": "Eco ac away"
+      },
+      "comfort_ac_away_temp": {
+        "name": "Comfort ac away"
+      },
+      "boost_ac_away_temp": {
+        "name": "Boost ac away"
+      }
    }
  }
 }
--- a/custom_components/versatile_thermostat/switch.py
+++ b/custom_components/versatile_thermostat/switch.py
@@ -0,0 +1,168 @@
+## pylint: disable=unused-argument
+
+""" Implements the VersatileThermostat select component """
+import logging
+from typing import Any
+
+from homeassistant.core import HomeAssistant, callback
+
+from homeassistant.components.switch import SwitchEntity
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.helpers.restore_state import RestoreEntity
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .commons import VersatileThermostatBaseEntity
+
+from .const import *  # pylint: disable=unused-wildcard-import,wildcard-import
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the VersatileThermostat switches with config flow."""
+    _LOGGER.debug(
+        "Calling async_setup_entry entry=%s, data=%s", entry.entry_id, entry.data
+    )
+
+    unique_id = entry.entry_id
+    name = entry.data.get(CONF_NAME)
+    vt_type = entry.data.get(CONF_THERMOSTAT_TYPE)
+    auto_start_stop_feature = entry.data.get(CONF_USE_AUTO_START_STOP_FEATURE)
+
+    entities = []
+    if vt_type == CONF_THERMOSTAT_CLIMATE:
+        entities.append(FollowUnderlyingTemperatureChange(hass, unique_id, name, entry))
+
+        if auto_start_stop_feature is True:
+            # Creates a switch to enable the auto-start/stop
+            enable_entity = AutoStartStopEnable(hass, unique_id, name, entry)
+            entities.append(enable_entity)
+
+    async_add_entities(entities, True)
+
+
+class AutoStartStopEnable(VersatileThermostatBaseEntity, SwitchEntity, RestoreEntity):
+    """The that enables the ManagedDevice optimisation with"""
+
+    def __init__(
+        self, hass: HomeAssistant, unique_id: str, name: str, entry_infos: ConfigEntry
+    ):
+        super().__init__(hass, unique_id, name)
+        self._attr_name = "Enable auto start/stop"
+        self._attr_unique_id = f"{self._device_name}_enable_auto_start_stop"
+        self._default_value = (
+            entry_infos.data.get(CONF_AUTO_START_STOP_LEVEL)
+            != AUTO_START_STOP_LEVEL_NONE
+        )
+        self._attr_is_on = self._default_value
+
+    @property
+    def icon(self) -> str | None:
+        """The icon"""
+        return "mdi:power-sleep"
+
+    async def async_added_to_hass(self):
+        await super().async_added_to_hass()
+
+        # Récupérer le dernier état sauvegardé de l'entité
+        last_state = await self.async_get_last_state()
+
+        # Si l'état précédent existe, vous pouvez l'utiliser
+        if last_state is not None:
+            self._attr_is_on = last_state.state == "on"
+        else:
+            # If no previous state set it to false by default
+            self._attr_is_on = self._default_value
+
+        self.update_my_state_and_vtherm()
+
+    def update_my_state_and_vtherm(self):
+        """Update the auto_start_stop_enable flag in my VTherm"""
+        self.async_write_ha_state()
+        if self.my_climate is not None:
+            self.my_climate.set_auto_start_stop_enable(self._attr_is_on)
+
+    @callback
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Turn the entity on."""
+        self.turn_on()
+
+    @callback
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn the entity off."""
+        self.turn_off()
+
+    @overrides
+    def turn_off(self, **kwargs: Any):
+        self._attr_is_on = False
+        self.update_my_state_and_vtherm()
+
+    @overrides
+    def turn_on(self, **kwargs: Any):
+        self._attr_is_on = True
+        self.update_my_state_and_vtherm()
+
+
+class FollowUnderlyingTemperatureChange(
+    VersatileThermostatBaseEntity, SwitchEntity, RestoreEntity
+):
+    """The that enables the ManagedDevice optimisation with"""
+
+    def __init__(
+        self, hass: HomeAssistant, unique_id: str, name: str, entry_infos: ConfigEntry
+    ):
+        super().__init__(hass, unique_id, name)
+        self._attr_name = "Follow underlying temp change"
+        self._attr_unique_id = f"{self._device_name}_follow_underlying_temp_change"
+        self._attr_is_on = False
+
+    @property
+    def icon(self) -> str | None:
+        """The icon"""
+        return "mdi:content-copy"
+
+    async def async_added_to_hass(self):
+        await super().async_added_to_hass()
+
+        # Récupérer le dernier état sauvegardé de l'entité
+        last_state = await self.async_get_last_state()
+
+        # Si l'état précédent existe, vous pouvez l'utiliser
+        if last_state is not None:
+            self._attr_is_on = last_state.state == "on"
+        else:
+            # If no previous state set it to false by default
+            self._attr_is_on = False
+
+        self.update_my_state_and_vtherm()
+
+    def update_my_state_and_vtherm(self):
+        """Update the follow flag in my VTherm"""
+        self.async_write_ha_state()
+        if self.my_climate is not None:
+            self.my_climate.set_follow_underlying_temp_change(self._attr_is_on)
+
+    @callback
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Turn the entity on."""
+        self.turn_on()
+
+    @callback
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn the entity off."""
+        self.turn_off()
+
+    @overrides
+    def turn_off(self, **kwargs: Any):
+        self._attr_is_on = False
+        self.update_my_state_and_vtherm()
+
+    @overrides
+    def turn_on(self, **kwargs: Any):
+        self._attr_is_on = True
+        self.update_my_state_and_vtherm()
--- a/custom_components/versatile_thermostat/thermostat_climate.py
+++ b/custom_components/versatile_thermostat/thermostat_climate.py
@@ -1,99 +1,68 @@
-# pylint: disable=line-too-long, too-many-lines
-""" A climate over switch classe """
+# pylint: disable=line-too-long, too-many-lines, abstract-method
+""" A climate over climate classe """
 import logging
 from datetime import timedelta, datetime

-from homeassistant.core import HomeAssistant, State, callback
+from homeassistant.const import STATE_ON
+from homeassistant.core import Event, HomeAssistant, State, callback
 from homeassistant.helpers.event import (
    async_track_state_change_event,
    async_track_time_interval,
    EventStateChangedData,
 )
-from homeassistant.helpers.typing import EventType as HASSEventType
 from homeassistant.components.climate import (
    HVACAction,
    HVACMode,
    ClimateEntityFeature,
 )

-from .commons import NowClass, round_to_nearest
+from .commons import round_to_nearest
 from .base_thermostat import BaseThermostat, ConfigData
 from .pi_algorithm import PITemperatureRegulator

-from .const import (
-    overrides,
-    DOMAIN,
-    CONF_CLIMATE,
-    CONF_CLIMATE_2,
-    CONF_CLIMATE_3,
-    CONF_CLIMATE_4,
-    CONF_AUTO_REGULATION_MODE,
-    CONF_AUTO_REGULATION_NONE,
-    CONF_AUTO_REGULATION_SLOW,
-    CONF_AUTO_REGULATION_LIGHT,
-    CONF_AUTO_REGULATION_MEDIUM,
-    CONF_AUTO_REGULATION_STRONG,
-    CONF_AUTO_REGULATION_EXPERT,
-    CONF_AUTO_REGULATION_DTEMP,
-    CONF_AUTO_REGULATION_PERIOD_MIN,
-    CONF_AUTO_REGULATION_USE_DEVICE_TEMP,
-    CONF_AUTO_FAN_MODE,
-    CONF_AUTO_FAN_NONE,
-    CONF_AUTO_FAN_LOW,
-    CONF_AUTO_FAN_MEDIUM,
-    CONF_AUTO_FAN_HIGH,
-    CONF_AUTO_FAN_TURBO,
-    RegulationParamSlow,
-    RegulationParamLight,
-    RegulationParamMedium,
-    RegulationParamStrong,
-    AUTO_FAN_DTEMP_THRESHOLD,
-    AUTO_FAN_DEACTIVATED_MODES,
-    UnknownEntity,
-)
+from .const import *  # pylint: disable=wildcard-import, unused-wildcard-import

 from .vtherm_api import VersatileThermostatAPI
 from .underlyings import UnderlyingClimate
+from .auto_start_stop_algorithm import (
+    AutoStartStopDetectionAlgorithm,
+    AUTO_START_STOP_ACTION_OFF,
+    AUTO_START_STOP_ACTION_ON,
+)

 _LOGGER = logging.getLogger(__name__)

+HVAC_ACTION_ON = [  # pylint: disable=invalid-name
+    HVACAction.COOLING,
+    HVACAction.DRYING,
+    HVACAction.FAN,
+    HVACAction.HEATING,
+]

-class ThermostatOverClimate(BaseThermostat):
+class ThermostatOverClimate(BaseThermostat[UnderlyingClimate]):
    """Representation of a base class for a Versatile Thermostat over a climate"""

-    _auto_regulation_mode: str | None = None
-    _regulation_algo = None
-    _regulated_target_temp: float | None = None
-    _auto_regulation_dtemp: float | None = None
-    _auto_regulation_period_min: int | None = None
-    _last_regulation_change: datetime | None = None
-    # The fan mode configured in configEntry
-    _auto_fan_mode: str | None = None
-    # The current fan mode (could be change by service call)
-    _current_auto_fan_mode: str | None = None
-    # The fan_mode name depending of the current_mode
-    _auto_activated_fan_mode: str | None = None
-    _auto_deactivated_fan_mode: str | None = None
-
-    _entity_component_unrecorded_attributes = (
-        BaseThermostat._entity_component_unrecorded_attributes.union(
-            frozenset(
-                {
-                    "is_over_climate",
-                    "start_hvac_action_date",
-                    "underlying_climate_0",
-                    "underlying_climate_1",
-                    "underlying_climate_2",
-                    "underlying_climate_3",
-                    "regulation_accumulated_error",
-                    "auto_regulation_mode",
-                    "auto_fan_mode",
-                    "current_auto_fan_mode",
-                    "auto_activated_fan_mode",
-                    "auto_deactivated_fan_mode",
-                    "auto_regulation_use_device_temp",
-                }
-            )
+    _entity_component_unrecorded_attributes = BaseThermostat._entity_component_unrecorded_attributes.union(  # pylint: disable=protected-access
+        frozenset(
+            {
+                "is_over_climate",
+                "start_hvac_action_date",
+                "underlying_entities",
+                "regulation_accumulated_error",
+                "auto_regulation_mode",
+                "auto_fan_mode",
+                "current_auto_fan_mode",
+                "auto_activated_fan_mode",
+                "auto_deactivated_fan_mode",
+                "auto_regulation_use_device_temp",
+                "auto_start_stop_level",
+                "auto_start_stop_dtmin",
+                "auto_start_stop_enable",
+                "auto_start_stop_accumulated_error",
+                "auto_start_stop_accumulated_error_threshold",
+                "auto_start_stop_last_switch_date",
+                "follow_underlying_temp_change",
+            }
        )
    )

@@ -101,25 +70,97 @@ class ThermostatOverClimate(BaseThermostat):
        self, hass: HomeAssistant, unique_id: str, name: str, entry_infos: ConfigData
    ):
        """Initialize the thermostat over switch."""
+        self._auto_regulation_mode: str | None = None
+        self._regulation_algo = None
+        self._regulated_target_temp: float | None = None
+        self._auto_regulation_dtemp: float | None = None
+        self._auto_regulation_period_min: int | None = None
+        self._last_regulation_change: datetime | None = None
+        # The fan mode configured in configEntry
+        self._auto_fan_mode: str | None = None
+        # The current fan mode (could be change by service call)
+        self._current_auto_fan_mode: str | None = None
+        # The fan_mode name depending of the current_mode
+        self._auto_activated_fan_mode: str | None = None
+        self._auto_deactivated_fan_mode: str | None = None
+        self._auto_start_stop_level: TYPE_AUTO_START_STOP_LEVELS = (
+            AUTO_START_STOP_LEVEL_NONE
+        )
+        self._auto_start_stop_algo: AutoStartStopDetectionAlgorithm | None = None
+        self._is_auto_start_stop_enabled: bool = False
+        self._follow_underlying_temp_change: bool = False
+        self._last_regulation_change = None  # NowClass.get_now(hass)
+
        # super.__init__ calls post_init at the end. So it must be called after regulation initialization
        super().__init__(hass, unique_id, name, entry_infos)
        self._regulated_target_temp = self.target_temperature
-        self._last_regulation_change = NowClass.get_now(hass)
+
+    @overrides
+    def post_init(self, config_entry: ConfigData):
+        """Initialize the Thermostat"""
+
+        super().post_init(config_entry)
+
+        for climate in config_entry.get(CONF_UNDERLYING_LIST):
+            under = UnderlyingClimate(
+                hass=self._hass,
+                thermostat=self,
+                climate_entity_id=climate,
+            )
+            self._underlyings.append(under)
+
+        self.choose_auto_regulation_mode(
+            config_entry.get(CONF_AUTO_REGULATION_MODE)
+            if config_entry.get(CONF_AUTO_REGULATION_MODE) is not None
+            else CONF_AUTO_REGULATION_NONE
+        )
+
+        self._auto_regulation_dtemp = (
+            config_entry.get(CONF_AUTO_REGULATION_DTEMP)
+            if config_entry.get(CONF_AUTO_REGULATION_DTEMP) is not None
+            else 0.5
+        )
+        self._auto_regulation_period_min = (
+            config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN)
+            if config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN) is not None
+            else 5
+        )
+
+        self._auto_fan_mode = (
+            config_entry.get(CONF_AUTO_FAN_MODE)
+            if config_entry.get(CONF_AUTO_FAN_MODE) is not None
+            else CONF_AUTO_FAN_NONE
+        )
+
+        self._auto_regulation_use_device_temp = config_entry.get(
+            CONF_AUTO_REGULATION_USE_DEVICE_TEMP, False
+        )
+
+        use_auto_start_stop = config_entry.get(CONF_USE_AUTO_START_STOP_FEATURE, False)
+        if use_auto_start_stop:
+            self._auto_start_stop_level = config_entry.get(
+                CONF_AUTO_START_STOP_LEVEL, AUTO_START_STOP_LEVEL_NONE
+            )
+        else:
+            self._auto_start_stop_level = AUTO_START_STOP_LEVEL_NONE
+
+        # Instanciate the auto start stop algo
+        self._auto_start_stop_algo = AutoStartStopDetectionAlgorithm(
+            self._auto_start_stop_level, self.name
+        )

    @property
    def is_over_climate(self) -> bool:
        """True if the Thermostat is over_climate"""
        return True

-    @property
-    def hvac_action(self) -> HVACAction | None:
-        """Returns the current hvac_action by checking all hvac_action of the underlyings"""
-
+    def calculate_hvac_action(self, under_list: list) -> HVACAction | None:
+        """Calculate an hvac action based on the hvac_action of the list in argument"""
        # if one not IDLE or OFF -> return it
        # else if one IDLE -> IDLE
        # else OFF
        one_idle = False
-        for under in self._underlyings:
+        for under in under_list:
            if (action := under.hvac_action) not in [
                HVACAction.IDLE,
                HVACAction.OFF,
@@ -131,19 +172,35 @@ class ThermostatOverClimate(BaseThermostat):
            return HVACAction.IDLE
        return HVACAction.OFF

+    @property
+    def hvac_action(self) -> HVACAction | None:
+        """Returns the current hvac_action by checking all hvac_action of the underlyings"""
+        return self.calculate_hvac_action(self._underlyings)
+
    @overrides
    async def _async_internal_set_temperature(self, temperature: float):
        """Set the target temperature and the target temperature of underlying climate if any"""
        await super()._async_internal_set_temperature(temperature)

        self._regulation_algo.set_target_temp(self.target_temperature)
+        # Is necessary cause control_heating method will not force the update.
        await self._send_regulated_temperature(force=True)

    async def _send_regulated_temperature(self, force=False):
        """Sends the regulated temperature to all underlying"""

        if self.hvac_mode == HVACMode.OFF:
-            _LOGGER.debug("%s - don't send regulated temperature cause VTherm is off ")
+            _LOGGER.debug(
+                "%s - don't send regulated temperature cause VTherm is off ", self
+            )
+            return
+
+        if self.target_temperature is None:
+            _LOGGER.warning(
+                "%s - don't send regulated temperature cause VTherm target_temp (%s) is None. This should be a temporary warning message.",
+                self,
+                self.target_temperature,
+            )
            return

        _LOGGER.info(
@@ -152,28 +209,37 @@ class ThermostatOverClimate(BaseThermostat):
            force,
        )

-        now: datetime = NowClass.get_now(self._hass)
-        period = float((now - self._last_regulation_change).total_seconds()) / 60.0
-        if not force and period < self._auto_regulation_period_min:
-            _LOGGER.info(
-                "%s - period (%.1f) min is < %.0f min -> forget the regulation send",
-                self,
-                period,
-                self._auto_regulation_period_min,
+        if self._last_regulation_change is not None:
+            period = (
+                float((self.now - self._last_regulation_change).total_seconds()) / 60.0
            )
-            return
+            if not force and period < self._auto_regulation_period_min:
+                _LOGGER.info(
+                    "%s - period (%.1f) min is < %.0f min -> forget the regulation send",
+                    self,
+                    period,
+                    self._auto_regulation_period_min,
+                )
+                return

        if not self._regulated_target_temp:
            self._regulated_target_temp = self.target_temperature

        _LOGGER.info("%s - regulation calculation will be done", self)

-        new_regulated_temp = round_to_nearest(
-            self._regulation_algo.calculate_regulated_temperature(
-                self.current_temperature, self._cur_ext_temp
-            ),
-            self._auto_regulation_dtemp,
-        )
+        # use _attr_target_temperature_step to round value if _auto_regulation_dtemp is equal to 0
+        regulation_step = self._auto_regulation_dtemp if self._auto_regulation_dtemp else self._attr_target_temperature_step
+        _LOGGER.debug("%s - usage regulation_step: %.2f ", self, regulation_step)
+
+        if self.current_temperature is not None:
+            new_regulated_temp = round_to_nearest(
+                self._regulation_algo.calculate_regulated_temperature(
+                    self.current_temperature, self._cur_ext_temp
+                ),
+                regulation_step,
+            )
+        else:
+            new_regulated_temp = self.target_temperature
        dtemp = new_regulated_temp - self._regulated_target_temp

        if not force and abs(dtemp) < self._auto_regulation_dtemp:
@@ -192,31 +258,22 @@ class ThermostatOverClimate(BaseThermostat):
            new_regulated_temp,
        )

-        self._last_regulation_change = now
+        self._last_regulation_change = self.now
        for under in self._underlyings:
            # issue 348 - use device temperature if configured as offset
            offset_temp = 0
            device_temp = 0
            if (
+                # current_temperature is set
+                self.current_temperature is not None
                # regulation can use the device_temp
-                self.auto_regulation_use_device_temp
+                and self.auto_regulation_use_device_temp
                # and we have access to the device temp
                and (device_temp := under.underlying_current_temperature) is not None
-                # and target is not reach (ie we need regulation)
-                and (
-                    (
-                        self.hvac_mode == HVACMode.COOL
-                        and self.target_temperature < self.current_temperature
-                    )
-                    or (
-                        self.hvac_mode == HVACMode.HEAT
-                        and self.target_temperature > self.current_temperature
-                    )
-                )
            ):
                offset_temp = device_temp - self.current_temperature

-            target_temp = self.regulated_target_temp + offset_temp
+            target_temp = round_to_nearest(self.regulated_target_temp + offset_temp, regulation_step)

            _LOGGER.debug(
                "%s - The device offset temp for regulation is %.2f - internal temp is %.2f. New target is %.2f",
@@ -277,53 +334,6 @@ class ThermostatOverClimate(BaseThermostat):
            )
            await self.async_set_fan_mode(self._auto_deactivated_fan_mode)

-    @overrides
-    def post_init(self, config_entry: ConfigData):
-        """Initialize the Thermostat"""
-
-        super().post_init(config_entry)
-        for climate in [
-            CONF_CLIMATE,
-            CONF_CLIMATE_2,
-            CONF_CLIMATE_3,
-            CONF_CLIMATE_4,
-        ]:
-            if config_entry.get(climate):
-                self._underlyings.append(
-                    UnderlyingClimate(
-                        hass=self._hass,
-                        thermostat=self,
-                        climate_entity_id=config_entry.get(climate),
-                    )
-                )
-
-        self.choose_auto_regulation_mode(
-            config_entry.get(CONF_AUTO_REGULATION_MODE)
-            if config_entry.get(CONF_AUTO_REGULATION_MODE) is not None
-            else CONF_AUTO_REGULATION_NONE
-        )
-
-        self._auto_regulation_dtemp = (
-            config_entry.get(CONF_AUTO_REGULATION_DTEMP)
-            if config_entry.get(CONF_AUTO_REGULATION_DTEMP) is not None
-            else 0.5
-        )
-        self._auto_regulation_period_min = (
-            config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN)
-            if config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN) is not None
-            else 5
-        )
-
-        self._auto_fan_mode = (
-            config_entry.get(CONF_AUTO_FAN_MODE)
-            if config_entry.get(CONF_AUTO_FAN_MODE) is not None
-            else CONF_AUTO_FAN_NONE
-        )
-
-        self._auto_regulation_use_device_temp = config_entry.get(
-            CONF_AUTO_REGULATION_USE_DEVICE_TEMP, False
-        )
-
    def choose_auto_regulation_mode(self, auto_regulation_mode: str):
        """Choose or change the regulation mode"""
        self._auto_regulation_mode = auto_regulation_mode
@@ -491,52 +501,71 @@ class ThermostatOverClimate(BaseThermostat):
        super().update_custom_attributes()

        self._attr_extra_state_attributes["is_over_climate"] = self.is_over_climate
-        self._attr_extra_state_attributes[
-            "start_hvac_action_date"
-        ] = self._underlying_climate_start_hvac_action_date
-        self._attr_extra_state_attributes["underlying_climate_0"] = self._underlyings[
-            0
-        ].entity_id
-        self._attr_extra_state_attributes["underlying_climate_1"] = (
-            self._underlyings[1].entity_id if len(self._underlyings) > 1 else None
-        )
-        self._attr_extra_state_attributes["underlying_climate_2"] = (
-            self._underlyings[2].entity_id if len(self._underlyings) > 2 else None
-        )
-        self._attr_extra_state_attributes["underlying_climate_3"] = (
-            self._underlyings[3].entity_id if len(self._underlyings) > 3 else None
+        self._attr_extra_state_attributes["start_hvac_action_date"] = (
+            self._underlying_climate_start_hvac_action_date
        )

+        self._attr_extra_state_attributes["underlying_entities"] = [
+            underlying.entity_id for underlying in self._underlyings
+        ]
+
        if self.is_regulated:
            self._attr_extra_state_attributes["is_regulated"] = self.is_regulated
-            self._attr_extra_state_attributes[
-                "regulated_target_temperature"
-            ] = self._regulated_target_temp
-            self._attr_extra_state_attributes[
-                "auto_regulation_mode"
-            ] = self.auto_regulation_mode
-            self._attr_extra_state_attributes[
-                "regulation_accumulated_error"
-            ] = self._regulation_algo.accumulated_error
+            self._attr_extra_state_attributes["regulated_target_temperature"] = (
+                self._regulated_target_temp
+            )
+            self._attr_extra_state_attributes["auto_regulation_mode"] = (
+                self.auto_regulation_mode
+            )
+            self._attr_extra_state_attributes["regulation_accumulated_error"] = (
+                self._regulation_algo.accumulated_error
+            )

        self._attr_extra_state_attributes["auto_fan_mode"] = self.auto_fan_mode
-        self._attr_extra_state_attributes[
-            "current_auto_fan_mode"
-        ] = self._current_auto_fan_mode
+        self._attr_extra_state_attributes["current_auto_fan_mode"] = (
+            self._current_auto_fan_mode
+        )
+
+        self._attr_extra_state_attributes["auto_activated_fan_mode"] = (
+            self._auto_activated_fan_mode
+        )
+
+        self._attr_extra_state_attributes["auto_deactivated_fan_mode"] = (
+            self._auto_deactivated_fan_mode
+        )
+
+        self._attr_extra_state_attributes["auto_regulation_use_device_temp"] = (
+            self.auto_regulation_use_device_temp
+        )
+
+        self._attr_extra_state_attributes["auto_start_stop_enable"] = (
+            self.auto_start_stop_enable
+        )
+
+        self._attr_extra_state_attributes["auto_start_stop_level"] = (
+            self._auto_start_stop_algo.level
+        )
+        self._attr_extra_state_attributes["auto_start_stop_dtmin"] = (
+            self._auto_start_stop_algo.dt_min
+        )
+        self._attr_extra_state_attributes["auto_start_stop_accumulated_error"] = (
+            self._auto_start_stop_algo.accumulated_error
+        )

        self._attr_extra_state_attributes[
-            "auto_activated_fan_mode"
-        ] = self._auto_activated_fan_mode
+            "auto_start_stop_accumulated_error_threshold"
+        ] = self._auto_start_stop_algo.accumulated_error_threshold

-        self._attr_extra_state_attributes[
-            "auto_deactivated_fan_mode"
-        ] = self._auto_deactivated_fan_mode
+        self._attr_extra_state_attributes["auto_start_stop_last_switch_date"] = (
+            self._auto_start_stop_algo.last_switch_date
+        )

-        self._attr_extra_state_attributes[
-            "auto_regulation_use_device_temp"
-        ] = self.auto_regulation_use_device_temp
+        self._attr_extra_state_attributes["follow_underlying_temp_change"] = (
+            self._follow_underlying_temp_change
+        )

        self.async_write_ha_state()
+
        _LOGGER.debug(
            "%s - Calling update_custom_attributes: %s",
            self,
@@ -581,7 +610,21 @@ class ThermostatOverClimate(BaseThermostat):
        ):
            added_energy = self._device_power * self._underlying_climate_delta_t

-        self._total_energy += added_energy
+        if self._total_energy is None:
+            self._total_energy = added_energy
+            _LOGGER.debug(
+                "%s - incremente_energy set energy is %s",
+                self,
+                self._total_energy,
+            )
+        else:
+            self._total_energy += added_energy
+            _LOGGER.debug(
+                "%s - incremente_energy incremented energy is %s",
+                self,
+                self._total_energy,
+            )
+
        _LOGGER.debug(
            "%s - added energy is %.3f . Total energy is now: %.3f",
            self,
@@ -590,7 +633,7 @@ class ThermostatOverClimate(BaseThermostat):
        )

    @callback
-    async def _async_climate_changed(self, event: HASSEventType[EventStateChangedData]):
+    async def _async_climate_changed(self, event: Event[EventStateChangedData]):
        """Handle unerdlying climate state changes.
        This method takes the underlying values and update the VTherm with them.
        To avoid loops (issues #121 #101 #95 #99), we discard the event if it is received
@@ -603,7 +646,8 @@ class ThermostatOverClimate(BaseThermostat):
        async def end_climate_changed(changes: bool):
            """To end the event management"""
            if changes:
-                self.async_write_ha_state()
+                # already done by update_custom_attribute
+                # self.async_write_ha_state()
                self.update_custom_attributes()
                await self.async_control_heating()

@@ -612,6 +656,15 @@ class ThermostatOverClimate(BaseThermostat):
        if not new_state:
            return

+        # Find the underlying which have change
+        under = self.find_underlying_by_entity_id(new_state.entity_id)
+
+        if not under:
+            _LOGGER.warning(
+                "We have a receive an event from entity %s which is NOT one of our underlying entities. This is not normal and should be reported to the developper of the integration"
+            )
+            return
+
        changes = False
        new_hvac_mode = new_state.state

@@ -646,20 +699,68 @@ class ThermostatOverClimate(BaseThermostat):
            new_state.last_updated if new_state and new_state.last_updated else None
        )

+        new_target_temp = (
+            new_state.attributes.get("temperature")
+            if new_state and new_state.attributes
+            else None
+        )
+
+        last_sent_temperature = under.last_sent_temperature or 0
+        under_temp_diff = (
+            (new_target_temp - last_sent_temperature) if new_target_temp else 0
+        )
+        if -1 < under_temp_diff < 1:
+            under_temp_diff = 0
+
        # Issue 99 - some AC turn hvac_mode=cool and hvac_action=idle when sending a HVACMode_OFF command
        # Issue 114 - Remove this because hvac_mode is now managed by local _hvac_mode and use idle action as is
        # if self._hvac_mode == HVACMode.OFF and new_hvac_action == HVACAction.IDLE:
        #    _LOGGER.debug("The underlying switch to idle instead of OFF. We will consider it as OFF")
        #    new_hvac_mode = HVACMode.OFF

+        # Forget event when the event holds no real changes
+        if (
+            new_hvac_mode == self._hvac_mode
+            and new_hvac_action == old_hvac_action
+            and under_temp_diff == 0
+            and (new_fan_mode is None or new_fan_mode == self._attr_fan_mode)
+        ):
+            _LOGGER.debug(
+                "%s - a underlying state change event is received but no real change have been found. Forget the event",
+                self,
+            )
+            return
+
+        # Ignore new target temperature when out of range
+        if (
+            not new_target_temp is None
+            and not self._attr_min_temp is None
+            and not self._attr_max_temp is None
+            and not (self._attr_min_temp <= new_target_temp <= self._attr_max_temp)
+        ):
+            _LOGGER.debug(
+                "%s - underlying sent a target temperature (%s) which is out of configured min/max range (%s / %s). The value will be ignored",
+                self,
+                new_target_temp,
+                self._attr_min_temp,
+                self._attr_max_temp,
+            )
+            new_target_temp = None
+            under_temp_diff = 0
+
+        # A real changes have to be managed
        _LOGGER.info(
-            "%s - Underlying climate %s changed. Event.new_hvac_mode is %s, current_hvac_mode=%s, new_hvac_action=%s, old_hvac_action=%s",
+            "%s - Underlying climate %s have changed. new_hvac_mode is %s (vs %s), new_hvac_action=%s (vs %s), new_target_temp=%s (vs %s), new_fan_mode=%s (vs %s)",
            self,
-            new_state.entity_id,
+            under.entity_id,
            new_hvac_mode,
            self._hvac_mode,
            new_hvac_action,
            old_hvac_action,
+            new_target_temp,
+            self.target_temperature,
+            new_fan_mode,
+            self._attr_fan_mode,
        )

        _LOGGER.debug(
@@ -673,12 +774,6 @@ class ThermostatOverClimate(BaseThermostat):
        )

        # Interpretation of hvac action
-        HVAC_ACTION_ON = [  # pylint: disable=invalid-name
-            HVACAction.COOLING,
-            HVACAction.DRYING,
-            HVACAction.FAN,
-            HVACAction.HEATING,
-        ]
        if old_hvac_action not in HVAC_ACTION_ON and new_hvac_action in HVAC_ACTION_ON:
            self._underlying_climate_start_hvac_action_date = (
                self.get_last_updated_date_or_now(new_state)
@@ -711,6 +806,7 @@ class ThermostatOverClimate(BaseThermostat):
            )
            changes = True

+        # Filter new state when received just after a change from VTherm
        # Issue #120 - Some TRV are changing target temperature a very long time (6 sec) after the change.
        # In that case a loop is possible if a user change multiple times during this 6 sec.
        if new_state_date_updated and self._last_change_time:
@@ -723,6 +819,7 @@ class ThermostatOverClimate(BaseThermostat):
                await end_climate_changed(changes)
                return

+        # Update all underlyings hvac_mode state if it has change
        if (
            new_hvac_mode
            in [
@@ -737,7 +834,6 @@ class ThermostatOverClimate(BaseThermostat):
            ]
            and self._hvac_mode != new_hvac_mode
        ):
-            # Update all underlyings state
            # Issue #334 - if all underlyings are not aligned with the same hvac_mode don't change the underlying and wait they are aligned
            if self.is_over_climate:
                for under in self._underlyings:
@@ -768,35 +864,122 @@ class ThermostatOverClimate(BaseThermostat):
            self._attr_fan_mode = new_fan_mode
            changes = True

-        if not changes:
-            # try to manage new target temperature set if state
+        # try to manage new target temperature set if state if no other changes have been found
+        # and if a target temperature have already been sent
+        if (
+            self._follow_underlying_temp_change
+            and not changes
+            and under.last_sent_temperature is not None
+        ):
            _LOGGER.debug(
-                "Do temperature check. temperature is %s, new_state.attributes is %s",
-                self.target_temperature,
-                new_state.attributes,
+                "Do temperature check. under.last_sent_temperature is %s, new_target_temp is %s",
+                under.last_sent_temperature,
+                new_target_temp,
            )
-            if (
-                # we do not change target temperature on regulated VTherm
-                not self.is_regulated
-                and new_state.attributes
-                and (new_target_temp := new_state.attributes.get("temperature"))
-                and new_target_temp != self.target_temperature
-            ):
+            # if the underlying have change its target temperature
+            if under_temp_diff != 0:
                _LOGGER.info(
-                    "%s - Target temp in underlying have change to %s",
+                    "%s - Target temp in underlying have change to %s (vs %s)",
                    self,
                    new_target_temp,
+                    under.last_sent_temperature,
                )
                await self.async_set_temperature(temperature=new_target_temp)
                changes = True
+            else:
+                _LOGGER.debug(
+                    "%s - Forget the eventual underlying temperature change there is no real change",
+                    self,
+                )

        await end_climate_changed(changes)

+    async def check_auto_start_stop(self):
+        """Check the auto-start-stop and an eventual action
+        Return False if we should stop the control_heating method"""
+        slope = (self.last_temperature_slope or 0) / 60  # to have the slope in °/min
+        action = self._auto_start_stop_algo.calculate_action(
+            self.hvac_mode,
+            self._saved_hvac_mode,
+            self.target_temperature,
+            self.current_temperature,
+            slope,
+            self.now,
+        )
+        _LOGGER.debug("%s - auto_start_stop action is %s", self, action)
+        if action == AUTO_START_STOP_ACTION_OFF and self.is_on:
+            _LOGGER.info(
+                "%s - Turning OFF the Vtherm due to auto-start-stop conditions",
+                self,
+            )
+            self.set_hvac_off_reason(HVAC_OFF_REASON_AUTO_START_STOP)
+            await self.async_turn_off()
+
+            # Send an event
+            self.send_event(
+                event_type=EventType.AUTO_START_STOP_EVENT,
+                data={
+                    "type": "stop",
+                    "name": self.name,
+                    "cause": "Auto stop conditions reached",
+                    "hvac_mode": self.hvac_mode,
+                    "saved_hvac_mode": self._saved_hvac_mode,
+                    "target_temperature": self.target_temperature,
+                    "current_temperature": self.current_temperature,
+                    "temperature_slope": round(slope, 3),
+                    "accumulated_error": self._auto_start_stop_algo.accumulated_error,
+                    "accumulated_error_threshold": self._auto_start_stop_algo.accumulated_error_threshold,
+                },
+            )
+
+            # Stop here
+            return False
+        elif (
+            action == AUTO_START_STOP_ACTION_ON
+            and self.hvac_off_reason == HVAC_OFF_REASON_AUTO_START_STOP
+        ):
+            _LOGGER.info(
+                "%s - Turning ON the Vtherm due to auto-start-stop conditions", self
+            )
+            await self.async_turn_on()
+
+            # Send an event
+            self.send_event(
+                event_type=EventType.AUTO_START_STOP_EVENT,
+                data={
+                    "type": "start",
+                    "name": self.name,
+                    "cause": "Auto start conditions reached",
+                    "hvac_mode": self.hvac_mode,
+                    "saved_hvac_mode": self._saved_hvac_mode,
+                    "target_temperature": self.target_temperature,
+                    "current_temperature": self.current_temperature,
+                    "temperature_slope": round(slope, 3),
+                    "accumulated_error": self._auto_start_stop_algo.accumulated_error,
+                    "accumulated_error_threshold": self._auto_start_stop_algo.accumulated_error_threshold,
+                },
+            )
+
+            self.update_custom_attributes()
+
+        return True
+
    @overrides
    async def async_control_heating(self, force=False, _=None) -> bool:
        """The main function used to run the calculation at each cycle"""
        ret = await super().async_control_heating(force, _)

+        # Check if we need to auto start/stop the Vtherm
+        if self.auto_start_stop_enable:
+            continu = await self.check_auto_start_stop()
+            if not continu:
+                return ret
+        else:
+            _LOGGER.debug("%s - auto start/stop is disabled", self)
+
+            # Continue the normal async_control_heating
+
+        # Send the regulated temperature to the underlyings
        await self._send_regulated_temperature()

        if self._auto_fan_mode and self._auto_fan_mode != CONF_AUTO_FAN_NONE:
@@ -804,6 +987,42 @@ class ThermostatOverClimate(BaseThermostat):

        return ret

+    def set_auto_start_stop_enable(self, is_enabled: bool):
+        """Enable/Disable the auto-start/stop feature"""
+        self._is_auto_start_stop_enabled = is_enabled
+        if (
+            self.hvac_mode == HVACMode.OFF
+            and self.hvac_off_reason == HVAC_OFF_REASON_AUTO_START_STOP
+        ):
+            _LOGGER.debug(
+                "%s - the vtherm is off cause auto-start/stop and enable have been set to false -> starts the VTherm"
+            )
+            self.hass.create_task(self.async_turn_on())
+
+            # Send an event
+            self.send_event(
+                event_type=EventType.AUTO_START_STOP_EVENT,
+                data={
+                    "type": "start",
+                    "name": self.name,
+                    "cause": "Auto start stop disabled",
+                    "hvac_mode": self.hvac_mode,
+                    "saved_hvac_mode": self._saved_hvac_mode,
+                    "target_temperature": self.target_temperature,
+                    "current_temperature": self.current_temperature,
+                    "temperature_slope": round(self.last_temperature_slope or 0, 3),
+                    "accumulated_error": self._auto_start_stop_algo.accumulated_error,
+                    "accumulated_error_threshold": self._auto_start_stop_algo.accumulated_error_threshold,
+                },
+            )
+
+        self.update_custom_attributes()
+
+    def set_follow_underlying_temp_change(self, follow: bool):
+        """Set the flaf follow the underlying temperature changes"""
+        self._follow_underlying_temp_change = follow
+        self.update_custom_attributes()
+
    @property
    def auto_regulation_mode(self) -> str | None:
        """Get the regulation mode"""
@@ -890,10 +1109,7 @@ class ThermostatOverClimate(BaseThermostat):
    @property
    def temperature_unit(self) -> str:
        """Return the unit of measurement."""
-        if self.underlying_entity(0):
-            return self.underlying_entity(0).temperature_unit
-
-        return self._unit
+        return self.hass.config.units.temperature_unit

    @property
    def supported_features(self):
@@ -903,15 +1119,6 @@ class ThermostatOverClimate(BaseThermostat):

        return self._support_flags

-    # We keep the step configured for the VTherm and not the step of the underlying
-    # @property
-    # def target_temperature_step(self) -> float | None:
-    #     """Return the supported step of target temperature."""
-    #     if self.underlying_entity(0):
-    #         return self.underlying_entity(0).target_temperature_step
-    #
-    #     return None
-
    @property
    def target_temperature_high(self) -> float | None:
        """Return the highbound target temperature we try to reach.
@@ -934,6 +1141,14 @@ class ThermostatOverClimate(BaseThermostat):

        return None

+    @property
+    def current_humidity(self) -> float | None:
+        """Return the humidity."""
+        if self.underlying_entity(0):
+            return self.underlying_entity(0).current_humidity
+
+        return None
+
    @property
    def is_aux_heat(self) -> bool | None:
        """Return true if aux heater.
@@ -953,6 +1168,21 @@ class ThermostatOverClimate(BaseThermostat):
                return False
        return True

+    @property
+    def auto_start_stop_level(self) -> TYPE_AUTO_START_STOP_LEVELS:
+        """Return the auto start/stop level."""
+        return self._auto_start_stop_level
+
+    @property
+    def auto_start_stop_enable(self) -> bool:
+        """Returns the auto_start_stop_enable"""
+        return self._is_auto_start_stop_enabled
+
+    @property
+    def follow_underlying_temp_change(self) -> bool:
+        """Get the follow underlying temp change flag"""
+        return self._follow_underlying_temp_change
+
    @overrides
    def init_underlyings(self):
        """Init the underlyings if not already done"""
@@ -1055,6 +1285,13 @@ class ThermostatOverClimate(BaseThermostat):
            self.choose_auto_regulation_mode(CONF_AUTO_REGULATION_SLOW)
        elif auto_regulation_mode == "Expert":
            self.choose_auto_regulation_mode(CONF_AUTO_REGULATION_EXPERT)
+        else:
+            _LOGGER.warning(
+                "%s - auto_regulation_mode %s is not supported",
+                self,
+                auto_regulation_mode,
+            )
+            return

        await self._send_regulated_temperature()
        self.update_custom_attributes()
@@ -1084,3 +1321,29 @@ class ThermostatOverClimate(BaseThermostat):
            self.choose_auto_fan_mode(CONF_AUTO_FAN_TURBO)

        self.update_custom_attributes()
+
+    @overrides
+    async def async_turn_off(self) -> None:
+        # if window is open, don't overwrite the saved_hvac_mode
+        if self.window_state != STATE_ON:
+            self.save_hvac_mode()
+        await self.async_set_hvac_mode(HVACMode.OFF)
+
+    @overrides
+    async def async_turn_on(self) -> None:
+
+        # don't turn_on if window is open
+        if self.window_state == STATE_ON:
+            _LOGGER.info(
+                "%s - refuse to turn on because window is open. We keep the save_hvac_mode",
+                self,
+            )
+            return
+
+        if self._saved_hvac_mode is not None:  # pylint: disable=protected-access
+            await self.restore_hvac_mode(True)
+        else:
+            if self._ac_mode:
+                await self.async_set_hvac_mode(HVACMode.COOL)
+            else:
+                await self.async_set_hvac_mode(HVACMode.HEAT)
--- a/custom_components/versatile_thermostat/thermostat_climate_valve.py
+++ b/custom_components/versatile_thermostat/thermostat_climate_valve.py
@@ -0,0 +1,298 @@
+# pylint: disable=line-too-long, too-many-lines, abstract-method
+""" A climate with a direct valve regulation class """
+
+import logging
+from datetime import datetime
+
+from homeassistant.core import HomeAssistant
+from homeassistant.components.climate import HVACMode, HVACAction
+
+from .underlyings import UnderlyingValveRegulation
+
+# from .commons import NowClass, round_to_nearest
+from .base_thermostat import ConfigData
+from .thermostat_climate import ThermostatOverClimate
+from .prop_algorithm import PropAlgorithm
+
+from .const import *  # pylint: disable=wildcard-import, unused-wildcard-import
+
+# from .vtherm_api import VersatileThermostatAPI
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class ThermostatOverClimateValve(ThermostatOverClimate):
+    """This class represent a VTherm over a climate with a direct valve regulation"""
+
+    _entity_component_unrecorded_attributes = ThermostatOverClimate._entity_component_unrecorded_attributes.union(  # pylint: disable=protected-access
+        frozenset(
+            {
+                "is_over_climate",
+                "have_valve_regulation",
+                "underlying_entities",
+                "on_time_sec",
+                "off_time_sec",
+                "cycle_min",
+                "function",
+                "tpi_coef_int",
+                "tpi_coef_ext",
+                "power_percent",
+            }
+        )
+    )
+
+    def __init__(
+        self, hass: HomeAssistant, unique_id: str, name: str, entry_infos: ConfigData
+    ):
+        """Initialize the ThermostatOverClimateValve class"""
+        _LOGGER.debug("%s - creating a ThermostatOverClimateValve VTherm", name)
+        self._underlyings_valve_regulation: list[UnderlyingValveRegulation] = []
+        self._valve_open_percent: int | None = None
+        self._last_calculation_timestamp: datetime | None = None
+        self._auto_regulation_dpercent: float | None = None
+        self._auto_regulation_period_min: int | None = None
+
+        super().__init__(hass, unique_id, name, entry_infos)
+
+    @overrides
+    def post_init(self, config_entry: ConfigData):
+        """Initialize the Thermostat and underlyings
+        Beware that the underlyings list contains the climate which represent the TRV
+        but also the UnderlyingValveRegulation which reprensent the valve"""
+
+        super().post_init(config_entry)
+
+        self._auto_regulation_dpercent = (
+            config_entry.get(CONF_AUTO_REGULATION_DTEMP)
+            if config_entry.get(CONF_AUTO_REGULATION_DTEMP) is not None
+            else 0.0
+        )
+        self._auto_regulation_period_min = (
+            config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN)
+            if config_entry.get(CONF_AUTO_REGULATION_PERIOD_MIN) is not None
+            else 0
+        )
+
+        # Initialization of the TPI algo
+        self._prop_algorithm = PropAlgorithm(
+            self._proportional_function,
+            self._tpi_coef_int,
+            self._tpi_coef_ext,
+            self._cycle_min,
+            self._minimal_activation_delay,
+            self.name,
+        )
+
+        offset_list = config_entry.get(CONF_OFFSET_CALIBRATION_LIST, [])
+        opening_list = config_entry.get(CONF_OPENING_DEGREE_LIST)
+        closing_list = config_entry.get(CONF_CLOSING_DEGREE_LIST, [])
+        for idx, _ in enumerate(config_entry.get(CONF_UNDERLYING_LIST)):
+            offset = offset_list[idx] if idx < len(offset_list) else None
+            # number of opening should equal number of underlying
+            opening = opening_list[idx]
+            closing = closing_list[idx] if idx < len(closing_list) else None
+            under = UnderlyingValveRegulation(
+                hass=self._hass,
+                thermostat=self,
+                offset_calibration_entity_id=offset,
+                opening_degree_entity_id=opening,
+                closing_degree_entity_id=closing,
+                climate_underlying=self._underlyings[idx],
+            )
+            self._underlyings_valve_regulation.append(under)
+
+    @overrides
+    def update_custom_attributes(self):
+        """Custom attributes"""
+        super().update_custom_attributes()
+
+        self._attr_extra_state_attributes["have_valve_regulation"] = (
+            self.have_valve_regulation
+        )
+
+        self._attr_extra_state_attributes["underlyings_valve_regulation"] = [
+            underlying.valve_entity_ids
+            for underlying in self._underlyings_valve_regulation
+        ]
+
+        self._attr_extra_state_attributes["on_percent"] = (
+            self._prop_algorithm.on_percent
+        )
+        self._attr_extra_state_attributes["power_percent"] = self.power_percent
+        self._attr_extra_state_attributes["on_time_sec"] = (
+            self._prop_algorithm.on_time_sec
+        )
+        self._attr_extra_state_attributes["off_time_sec"] = (
+            self._prop_algorithm.off_time_sec
+        )
+        self._attr_extra_state_attributes["cycle_min"] = self._cycle_min
+        self._attr_extra_state_attributes["function"] = self._proportional_function
+        self._attr_extra_state_attributes["tpi_coef_int"] = self._tpi_coef_int
+        self._attr_extra_state_attributes["tpi_coef_ext"] = self._tpi_coef_ext
+
+        self._attr_extra_state_attributes["valve_open_percent"] = (
+            self.valve_open_percent
+        )
+
+        self._attr_extra_state_attributes["auto_regulation_dpercent"] = (
+            self._auto_regulation_dpercent
+        )
+        self._attr_extra_state_attributes["auto_regulation_period_min"] = (
+            self._auto_regulation_period_min
+        )
+        self._attr_extra_state_attributes["last_calculation_timestamp"] = (
+            self._last_calculation_timestamp.astimezone(self._current_tz).isoformat()
+            if self._last_calculation_timestamp
+            else None
+        )
+
+        self.async_write_ha_state()
+        _LOGGER.debug(
+            "%s - Calling update_custom_attributes: %s",
+            self,
+            self._attr_extra_state_attributes,
+        )
+
+    @overrides
+    def recalculate(self):
+        """A utility function to force the calculation of a the algo and
+        update the custom attributes and write the state
+        """
+        _LOGGER.debug("%s - recalculate the open percent", self)
+
+        # TODO this is exactly the same method as the thermostat_valve recalculate. Put that in common
+
+        # For testing purpose. Should call _set_now() before
+        now = self.now
+
+        if self._last_calculation_timestamp is not None:
+            period = (now - self._last_calculation_timestamp).total_seconds() / 60
+            if period < self._auto_regulation_period_min:
+                _LOGGER.info(
+                    "%s - do not calculate TPI because regulation_period (%d) is not exceeded",
+                    self,
+                    period,
+                )
+                return
+
+        self._prop_algorithm.calculate(
+            self._target_temp,
+            self._cur_temp,
+            self._cur_ext_temp,
+            self._hvac_mode or HVACMode.OFF,
+        )
+
+        new_valve_percent = round(
+            max(0, min(self.proportional_algorithm.on_percent, 1)) * 100
+        )
+
+        # Issue 533 - don't filter with dtemp if valve should be close. Else it will never close
+        if new_valve_percent < self._auto_regulation_dpercent:
+            new_valve_percent = 0
+
+        dpercent = (
+            new_valve_percent - self._valve_open_percent
+            if self._valve_open_percent is not None
+            else 0
+        )
+        if (
+            self._last_calculation_timestamp is not None
+            and new_valve_percent > 0
+            and -1 * self._auto_regulation_dpercent
+            <= dpercent
+            < self._auto_regulation_dpercent
+        ):
+            _LOGGER.debug(
+                "%s - do not calculate TPI because regulation_dpercent (%.1f) is not exceeded",
+                self,
+                dpercent,
+            )
+
+            return
+
+        if (
+            self._last_calculation_timestamp is not None
+            and self._valve_open_percent == new_valve_percent
+        ):
+            _LOGGER.debug("%s - no change in valve_open_percent.", self)
+            return
+
+        self._valve_open_percent = new_valve_percent
+
+        self._last_calculation_timestamp = now
+
+        super().recalculate()
+
+    async def _send_regulated_temperature(self, force=False):
+        """Sends the regulated temperature to all underlying"""
+        if self.target_temperature is None:
+            return
+
+        for under in self._underlyings:
+            if self.target_temperature != under.last_sent_temperature:
+                await under.set_temperature(
+                    self.target_temperature,
+                    self._attr_max_temp,
+                    self._attr_min_temp,
+                )
+
+        for under in self._underlyings_valve_regulation:
+            await under.set_valve_open_percent()
+
+    @property
+    def have_valve_regulation(self) -> bool:
+        """True if the Thermostat is regulated by valve"""
+        return True
+
+    @property
+    def power_percent(self) -> float | None:
+        """Get the current on_percent value"""
+        if self._prop_algorithm:
+            return round(self._prop_algorithm.on_percent * 100, 0)
+        else:
+            return None
+
+    # @property
+    # def hvac_modes(self) -> list[HVACMode]:
+    #    """Get the hvac_modes"""
+    #    return self._hvac_list
+
+    @property
+    def valve_open_percent(self) -> int:
+        """Gives the percentage of valve needed"""
+        if self._hvac_mode == HVACMode.OFF or self._valve_open_percent is None:
+            return 0
+        else:
+            return self._valve_open_percent
+
+    @property
+    def hvac_action(self) -> HVACAction | None:
+        """Returns the current hvac_action by checking all hvac_action of the _underlyings_valve_regulation"""
+
+        return self.calculate_hvac_action(self._underlyings_valve_regulation)
+
+    @property
+    def is_device_active(self) -> bool:
+        """A hack to overrides the state from underlyings"""
+        return self.valve_open_percent > 0
+
+    @property
+    def device_actives(self) -> int:
+        """Calculate the number of active devices"""
+        if self.is_device_active:
+            return [
+                under.opening_degree_entity_id
+                for under in self._underlyings_valve_regulation
+            ]
+        else:
+            return []
+
+    @property
+    def activable_underlying_entities(self) -> list | None:
+        """Returns the activable underlying entities for controling the central boiler"""
+        return self._underlyings_valve_regulation
+
+    @overrides
+    async def service_set_auto_regulation_mode(self, auto_regulation_mode: str):
+        """This should not be possible in valve regulation mode"""
+        return
--- a/custom_components/versatile_thermostat/thermostat_switch.py
+++ b/custom_components/versatile_thermostat/thermostat_switch.py
@@ -1,20 +1,17 @@
-# pylint: disable=line-too-long
+# pylint: disable=line-too-long, abstract-method

 """ A climate over switch classe """
 import logging
-from homeassistant.core import callback
+from homeassistant.core import Event, callback
 from homeassistant.helpers.event import (
    async_track_state_change_event,
    EventStateChangedData,
 )
-from homeassistant.helpers.typing import EventType as HASSEventType
+from homeassistant.core import HomeAssistant
 from homeassistant.components.climate import HVACMode

 from .const import (
-    CONF_HEATER,
-    CONF_HEATER_2,
-    CONF_HEATER_3,
-    CONF_HEATER_4,
+    CONF_UNDERLYING_LIST,
    CONF_HEATER_KEEP_ALIVE,
    CONF_INVERSE_SWITCH,
    overrides,
@@ -26,8 +23,7 @@ from .prop_algorithm import PropAlgorithm

 _LOGGER = logging.getLogger(__name__)

-
-class ThermostatOverSwitch(BaseThermostat):
+class ThermostatOverSwitch(BaseThermostat[UnderlyingSwitch]):
    """Representation of a base class for a Versatile Thermostat over a switch."""

    _entity_component_unrecorded_attributes = (
@@ -36,10 +32,7 @@ class ThermostatOverSwitch(BaseThermostat):
                {
                    "is_over_switch",
                    "is_inversed",
-                    "underlying_switch_0",
-                    "underlying_switch_1",
-                    "underlying_switch_2",
-                    "underlying_switch_3",
+                    "underlying_entities",
                    "on_time_sec",
                    "off_time_sec",
                    "cycle_min",
@@ -47,16 +40,16 @@ class ThermostatOverSwitch(BaseThermostat):
                    "tpi_coef_int",
                    "tpi_coef_ext",
                    "power_percent",
+                    "calculated_on_percent",
                }
            )
        )
    )

-    # useless for now
-    # def __init__(self, hass: HomeAssistant, unique_id, name, config_entry) -> None:
-    #    """Initialize the thermostat over switch."""
-    #    super().__init__(hass, unique_id, name, config_entry)
-    _is_inversed: bool | None = None
+    def __init__(self, hass: HomeAssistant, unique_id, name, config_entry) -> None:
+        """Initialize the thermostat over switch."""
+        self._is_inversed: bool | None = None
+        super().__init__(hass, unique_id, name, config_entry)

    @property
    def is_over_switch(self) -> bool:
@@ -88,15 +81,11 @@ class ThermostatOverSwitch(BaseThermostat):
            self._tpi_coef_ext,
            self._cycle_min,
            self._minimal_activation_delay,
+            self.name,
+            max_on_percent=self._max_on_percent,
        )

-        lst_switches = [config_entry.get(CONF_HEATER)]
-        if config_entry.get(CONF_HEATER_2):
-            lst_switches.append(config_entry.get(CONF_HEATER_2))
-        if config_entry.get(CONF_HEATER_3):
-            lst_switches.append(config_entry.get(CONF_HEATER_3))
-        if config_entry.get(CONF_HEATER_4):
-            lst_switches.append(config_entry.get(CONF_HEATER_4))
+        lst_switches = config_entry.get(CONF_UNDERLYING_LIST)

        delta_cycle = self._cycle_min * 60 / len(lst_switches)
        for idx, switch in enumerate(lst_switches):
@@ -136,20 +125,14 @@ class ThermostatOverSwitch(BaseThermostat):
        """Custom attributes"""
        super().update_custom_attributes()

+        under0: UnderlyingSwitch = self._underlyings[0]
        self._attr_extra_state_attributes["is_over_switch"] = self.is_over_switch
        self._attr_extra_state_attributes["is_inversed"] = self.is_inversed
-        self._attr_extra_state_attributes["underlying_switch_0"] = self._underlyings[
-            0
-        ].entity_id
-        self._attr_extra_state_attributes["underlying_switch_1"] = (
-            self._underlyings[1].entity_id if len(self._underlyings) > 1 else None
-        )
-        self._attr_extra_state_attributes["underlying_switch_2"] = (
-            self._underlyings[2].entity_id if len(self._underlyings) > 2 else None
-        )
-        self._attr_extra_state_attributes["underlying_switch_3"] = (
-            self._underlyings[3].entity_id if len(self._underlyings) > 3 else None
-        )
+        self._attr_extra_state_attributes["keep_alive_sec"] = under0.keep_alive_sec
+
+        self._attr_extra_state_attributes["underlying_entities"] = [
+           underlying.entity_id for underlying in self._underlyings
+        ]

        self._attr_extra_state_attributes[
            "on_percent"
@@ -165,6 +148,9 @@ class ThermostatOverSwitch(BaseThermostat):
        self._attr_extra_state_attributes["function"] = self._proportional_function
        self._attr_extra_state_attributes["tpi_coef_int"] = self._tpi_coef_int
        self._attr_extra_state_attributes["tpi_coef_ext"] = self._tpi_coef_ext
+        self._attr_extra_state_attributes[
+            "calculated_on_percent"
+        ] = self._prop_algorithm.calculated_on_percent

        self.async_write_ha_state()
        _LOGGER.debug(
@@ -183,10 +169,11 @@ class ThermostatOverSwitch(BaseThermostat):
            self._target_temp,
            self._cur_temp,
            self._cur_ext_temp,
-            self._hvac_mode == HVACMode.COOL,
+            self._hvac_mode or HVACMode.OFF,
        )
        self.update_custom_attributes()
-        self.async_write_ha_state()
+        # already done bu update_custom_attributes
+        # self.async_write_ha_state()

    @overrides
    def incremente_energy(self):
@@ -198,7 +185,23 @@ class ThermostatOverSwitch(BaseThermostat):
        if not self.is_over_climate and self.mean_cycle_power is not None:
            added_energy = self.mean_cycle_power * float(self._cycle_min) / 60.0

-        self._total_energy += added_energy
+        if self._total_energy is None:
+            self._total_energy = added_energy
+            _LOGGER.debug(
+                "%s - incremente_energy set energy is %s",
+                self,
+                self._total_energy,
+            )
+        else:
+            self._total_energy += added_energy
+            _LOGGER.debug(
+                "%s - incremente_energy increment energy is %s",
+                self,
+                self._total_energy,
+            )
+
+        self.update_custom_attributes()
+
        _LOGGER.debug(
            "%s - added energy is %.3f . Total energy is now: %.3f",
            self,
@@ -207,7 +210,7 @@ class ThermostatOverSwitch(BaseThermostat):
        )

    @callback
-    def _async_switch_changed(self, event: HASSEventType[EventStateChangedData]):
+    def _async_switch_changed(self, event: Event[EventStateChangedData]):
        """Handle heater switch state changes."""
        new_state = event.data.get("new_state")
        old_state = event.data.get("old_state")
--- a/custom_components/versatile_thermostat/thermostat_valve.py
+++ b/custom_components/versatile_thermostat/thermostat_valve.py
@@ -1,4 +1,4 @@
-# pylint: disable=line-too-long
+# pylint: disable=line-too-long, abstract-method
 """ A climate over switch classe """
 import logging
 from datetime import timedelta, datetime
@@ -8,18 +8,14 @@ from homeassistant.helpers.event import (
    async_track_time_interval,
    EventStateChangedData,
 )
-from homeassistant.helpers.typing import EventType as HASSEventType
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.components.climate import HVACMode

 from .base_thermostat import BaseThermostat, ConfigData
 from .prop_algorithm import PropAlgorithm

 from .const import (
-    CONF_VALVE,
-    CONF_VALVE_2,
-    CONF_VALVE_3,
-    CONF_VALVE_4,
+    CONF_UNDERLYING_LIST,
    # This is not really self-regulation but regulation here
    CONF_AUTO_REGULATION_DTEMP,
    CONF_AUTO_REGULATION_PERIOD_MIN,
@@ -30,30 +26,25 @@ from .underlyings import UnderlyingValve

 _LOGGER = logging.getLogger(__name__)

-
-class ThermostatOverValve(BaseThermostat):
+class ThermostatOverValve(BaseThermostat[UnderlyingValve]):  # pylint: disable=abstract-method
    """Representation of a class for a Versatile Thermostat over a Valve"""

-    _entity_component_unrecorded_attributes = (
-        BaseThermostat._entity_component_unrecorded_attributes.union(
-            frozenset(
-                {
-                    "is_over_valve",
-                    "underlying_valve_0",
-                    "underlying_valve_1",
-                    "underlying_valve_2",
-                    "underlying_valve_3",
-                    "on_time_sec",
-                    "off_time_sec",
-                    "cycle_min",
-                    "function",
-                    "tpi_coef_int",
-                    "tpi_coef_ext",
-                    "auto_regulation_dpercent",
-                    "auto_regulation_period_min",
-                    "last_calculation_timestamp",
-                }
-            )
+    _entity_component_unrecorded_attributes = BaseThermostat._entity_component_unrecorded_attributes.union(  # pylint: disable=protected-access
+        frozenset(
+            {
+                "is_over_valve",
+                "underlying_entities",
+                "on_time_sec",
+                "off_time_sec",
+                "cycle_min",
+                "function",
+                "tpi_coef_int",
+                "tpi_coef_ext",
+                "auto_regulation_dpercent",
+                "auto_regulation_period_min",
+                "last_calculation_timestamp",
+                "calculated_on_percent",
+            }
        )
    )

@@ -105,15 +96,11 @@ class ThermostatOverValve(BaseThermostat):
            self._tpi_coef_ext,
            self._cycle_min,
            self._minimal_activation_delay,
+            self.name,
+            max_on_percent=self._max_on_percent,
        )

-        lst_valves = [config_entry.get(CONF_VALVE)]
-        if config_entry.get(CONF_VALVE_2):
-            lst_valves.append(config_entry.get(CONF_VALVE_2))
-        if config_entry.get(CONF_VALVE_3):
-            lst_valves.append(config_entry.get(CONF_VALVE_3))
-        if config_entry.get(CONF_VALVE_4):
-            lst_valves.append(config_entry.get(CONF_VALVE_4))
+        lst_valves = config_entry.get(CONF_UNDERLYING_LIST)

        for _, valve in enumerate(lst_valves):
            self._underlyings.append(
@@ -148,7 +135,7 @@ class ThermostatOverValve(BaseThermostat):
        )

    @callback
-    async def _async_valve_changed(self, event: HASSEventType[EventStateChangedData]):
+    async def _async_valve_changed(self, event: Event[EventStateChangedData]):
        """Handle unerdlying valve state changes.
        This method just log the change. It changes nothing to avoid loops.
        """
@@ -165,18 +152,10 @@ class ThermostatOverValve(BaseThermostat):
            "valve_open_percent"
        ] = self.valve_open_percent
        self._attr_extra_state_attributes["is_over_valve"] = self.is_over_valve
-        self._attr_extra_state_attributes["underlying_valve_0"] = self._underlyings[
-            0
-        ].entity_id
-        self._attr_extra_state_attributes["underlying_valve_1"] = (
-            self._underlyings[1].entity_id if len(self._underlyings) > 1 else None
-        )
-        self._attr_extra_state_attributes["underlying_valve_2"] = (
-            self._underlyings[2].entity_id if len(self._underlyings) > 2 else None
-        )
-        self._attr_extra_state_attributes["underlying_valve_3"] = (
-            self._underlyings[3].entity_id if len(self._underlyings) > 3 else None
-        )
+
+        self._attr_extra_state_attributes["underlying_entities"] = [
+           underlying.entity_id for underlying in self._underlyings
+        ]

        self._attr_extra_state_attributes[
            "on_percent"
@@ -202,6 +181,9 @@ class ThermostatOverValve(BaseThermostat):
            if self._last_calculation_timestamp
            else None
        )
+        self._attr_extra_state_attributes[
+            "calculated_on_percent"
+        ] = self._prop_algorithm.calculated_on_percent

        self.async_write_ha_state()
        _LOGGER.debug(
@@ -234,17 +216,23 @@ class ThermostatOverValve(BaseThermostat):
            self._target_temp,
            self._cur_temp,
            self._cur_ext_temp,
-            self._hvac_mode == HVACMode.COOL,
+            self._hvac_mode or HVACMode.OFF,
        )

        new_valve_percent = round(
            max(0, min(self.proportional_algorithm.on_percent, 1)) * 100
        )

+        # Issue 533 - don't filter with dtemp if valve should be close. Else it will never close
+        if new_valve_percent < self._auto_regulation_dpercent:
+            new_valve_percent = 0
+
        dpercent = new_valve_percent - self.valve_open_percent
        if (
-            dpercent >= -1 * self._auto_regulation_dpercent
-            and dpercent < self._auto_regulation_dpercent
+            new_valve_percent > 0
+            and -1 * self._auto_regulation_dpercent
+            <= dpercent
+            < self._auto_regulation_dpercent
        ):
            _LOGGER.debug(
                "%s - do not calculate TPI because regulation_dpercent (%.1f) is not exceeded",
@@ -260,13 +248,15 @@ class ThermostatOverValve(BaseThermostat):

        self._valve_open_percent = new_valve_percent

-        for under in self._underlyings:
-            under.set_valve_open_percent()
+        # is one in start_cycle now
+        # for under in self._underlyings:
+        #    under.set_valve_open_percent()

        self._last_calculation_timestamp = now

        self.update_custom_attributes()
-        self.async_write_ha_state()
+        # already done in update_custom_attributes
+        # self.async_write_ha_state()

    @overrides
    def incremente_energy(self):
@@ -278,7 +268,23 @@ class ThermostatOverValve(BaseThermostat):
        if not self.is_over_climate and self.mean_cycle_power is not None:
            added_energy = self.mean_cycle_power * float(self._cycle_min) / 60.0

-        self._total_energy += added_energy
+        if self._total_energy is None:
+            self._total_energy = added_energy
+            _LOGGER.debug(
+                "%s - incremente_energy set energy is %s",
+                self,
+                self._total_energy,
+            )
+        else:
+            self._total_energy += added_energy
+            _LOGGER.debug(
+                "%s - get_my_previous_state increment energy is %s",
+                self,
+                self._total_energy,
+            )
+
+        self.update_custom_attributes()
+
        _LOGGER.debug(
            "%s - added energy is %.3f . Total energy is now: %.3f",
            self,
--- a/custom_components/versatile_thermostat/translations/el.json
+++ b/custom_components/versatile_thermostat/translations/el.json
@@ -43,7 +43,7 @@
          "auto_regulation_dtemp": "Όριο ρύθμισης",
          "auto_regulation_periode_min": "Ελάχιστη περίοδος ρύθμισης",
          "inverse_switch_command": "Αντίστροφη εντολή διακόπτη",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
          "heater_entity_id": "Υποχρεωτική ταυτότητα οντότητας θερμαντήρα",
@@ -64,7 +64,7 @@
          "auto_regulation_dtemp": "Το όριο σε ° κάτω από το οποίο η αλλαγή θερμοκρασίας δεν θα αποστέλλεται",
          "auto_regulation_periode_min": "Διάρκεια σε λεπτά μεταξύ δύο ενημερώσεων ρύθμισης",
          "inverse_switch_command": "Για διακόπτη με πιλοτικό καλώδιο και δίοδο μπορεί να χρειαστεί να αντιστρέψετε την εντολή",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -216,7 +216,7 @@
          "auto_regulation_dtemp": "Όριο ρύθμισης",
          "auto_regulation_periode_min": "Ελάχιστη περίοδος ρύθμισης",
          "inverse_switch_command": "Αντίστροφη εντολή διακόπτη",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
          "heater_entity_id": "Υποχρεωτική ταυτότητα οντότητας θερμαντήρα",
@@ -237,7 +237,7 @@
          "auto_regulation_dtemp": "Το κατώφλι σε °C κάτω από το οποίο η αλλαγή της θερμοκρασίας δεν θα αποστέλλεται",
          "auto_regulation_periode_min": "Διάρκεια σε λεπτά μεταξύ δύο ενημερώσεων ρύθμισης",
          "inverse_switch_command": "Για διακόπτες με πιλοτικό καλώδιο και δίοδο μπορεί να χρειαστεί να αντιστραφεί η εντολή",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
--- a/custom_components/versatile_thermostat/translations/en.json
+++ b/custom_components/versatile_thermostat/translations/en.json
@@ -12,80 +12,89 @@
          "thermostat_type": "Only one central configuration type is possible"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Configure your thermostat. You will be able to finalize the configuration when all required parameters are entered.",
+        "menu_options": {
+          "main": "Main attributes",
+          "central_boiler": "Central boiler",
+          "type": "Underlyings",
+          "tpi": "TPI parameters",
+          "features": "Features",
+          "presets": "Presets",
+          "window": "Window detection",
+          "motion": "Motion detection",
+          "power": "Power management",
+          "presence": "Presence detection",
+          "advanced": "Advanced parameters",
+          "auto_start_stop": "Auto start and stop",
+          "valve_regulation": "Valve regulation configuration",
+          "finalize": "All done",
+          "configuration_not_complete": "Configuration not complete"
+        }
+      },
      "main": {
        "title": "Add new Versatile Thermostat",
        "description": "Main mandatory attributes",
        "data": {
          "name": "Name",
          "thermostat_type": "Thermostat type",
-          "temperature_sensor_entity_id": "Temperature sensor entity id",
+          "temperature_sensor_entity_id": "Room temperature",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature datetime",
          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id",
          "cycle_min": "Cycle duration (minutes)",
-          "temp_min": "Minimal temperature allowed",
-          "temp_max": "Maximal temperature allowed",
+          "temp_min": "Minimum temperature allowed",
+          "temp_max": "Maximum temperature allowed",
          "step_temperature": "Temperature step",
          "device_power": "Device power",
-          "use_central_mode": "Enable the control by central entity (need central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_central_mode": "Enable the control by central entity (requires central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_main_central_config": "Use additional central main configuration. Check to use the central main configuration (outdoor temperature, min, max, step, ...).",
+          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature sensor entity id. Should be datetime sensor",
+          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+        }
+      },
+      "features": {
+        "title": "Features",
+        "description": "Thermostat features",
+        "data": {
          "use_window_feature": "Use window detection",
          "use_motion_feature": "Use motion detection",
          "use_power_feature": "Use power management",
          "use_presence_feature": "Use presence detection",
-          "use_main_central_config": "Use central main configuration. Check to use the central main configuration. Uncheck to use a specific main configuration for this VTherm",
-          "add_central_boiler_control": "Add a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after seecting this checkbox to take effect. If one VTherm need heating, the boiler will be turned on. If no VTherm needs heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the next configuration page",
-          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+          "use_central_boiler_feature": "Use a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after selecting this checkbox to take effect. If one VTherm requires heating, the boiler will be turned on. If no VTherm requires heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the related configuration page",
+          "use_auto_start_stop_feature": "Use the auto start and stop feature"
        }
      },
      "type": {
        "title": "Linked entities",
        "description": "Linked entities attributes",
        "data": {
-          "heater_entity_id": "1st heater switch",
-          "heater_entity2_id": "2nd heater switch",
-          "heater_entity3_id": "3rd heater switch",
-          "heater_entity4_id": "4th heater switch",
+          "underlying_entity_ids": "The device(s) to be controlled",
          "heater_keep_alive": "Switch keep-alive interval in seconds",
          "proportional_function": "Algorithm",
-          "climate_entity_id": "1st underlying climate",
-          "climate_entity2_id": "2nd underlying climate",
-          "climate_entity3_id": "3rd underlying climate",
-          "climate_entity4_id": "4th underlying climate",
          "ac_mode": "AC mode",
-          "valve_entity_id": "1st valve number",
-          "valve_entity2_id": "2nd valve number",
-          "valve_entity3_id": "3rd valve number",
-          "valve_entity4_id": "4th valve number",
          "auto_regulation_mode": "Self-regulation",
          "auto_regulation_dtemp": "Regulation threshold",
-          "auto_regulation_periode_min": "Regulation minimal period",
+          "auto_regulation_periode_min": "Regulation minimum period",
          "auto_regulation_use_device_temp": "Use internal temperature of the underlying",
          "inverse_switch_command": "Inverse switch command",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
-          "heater_entity_id": "Mandatory heater entity id",
-          "heater_entity2_id": "Optional 2nd Heater entity id. Leave empty if not used",
-          "heater_entity3_id": "Optional 3rd Heater entity id. Leave empty if not used",
-          "heater_entity4_id": "Optional 4th Heater entity id. Leave empty if not used",
+          "underlying_entity_ids": "The device(s) to be controlled - 1 is required",
          "heater_keep_alive": "Optional heater switch state refresh interval. Leave empty if not required.",
          "proportional_function": "Algorithm to use (TPI is the only one for now)",
-          "climate_entity_id": "Underlying climate entity id",
-          "climate_entity2_id": "2nd underlying climate entity id",
-          "climate_entity3_id": "3rd underlying climate entity id",
-          "climate_entity4_id": "4th underlying climate entity id",
          "ac_mode": "Use the Air Conditioning (AC) mode",
-          "valve_entity_id": "1st valve number entity id",
-          "valve_entity2_id": "2nd valve number entity id",
-          "valve_entity3_id": "3rd valve number entity id",
-          "valve_entity4_id": "4th valve number entity id",
          "auto_regulation_mode": "Auto adjustment of the target temperature",
          "auto_regulation_dtemp": "The threshold in ° (or % for valve) under which the temperature change will not be sent",
          "auto_regulation_periode_min": "Duration in minutes between two regulation update",
          "auto_regulation_use_device_temp": "Use the eventual internal temperature sensor of the underlying to speedup the self-regulation",
          "inverse_switch_command": "For switch with pilot wire and diode you may need to inverse the command",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -104,26 +113,9 @@
      },
      "presets": {
        "title": "Presets",
-        "description": "For each preset set the target temperature (0 to ignore preset)",
+        "description": "Select if the thermostat will use central preset - deselect for the thermostat to have its own presets",
        "data": {
-          "eco_temp": "Eco preset",
-          "comfort_temp": "Comfort preset",
-          "boost_temp": "Boost preset",
-          "frost_temp": "Frost protection preset",
-          "eco_ac_temp": "Eco preset for AC mode",
-          "comfort_ac_temp": "Comfort preset for AC mode",
-          "boost_ac_temp": "Boost preset for AC mode",
          "use_presets_central_config": "Use central presets configuration"
-        },
-        "data_description": {
-          "eco_temp": "Temperature in Eco preset",
-          "comfort_temp": "Temperature in Comfort preset",
-          "boost_temp": "Temperature in Boost preset",
-          "frost_temp": "Temperature in Frost protection preset",
-          "eco_ac_temp": "Temperature in Eco preset for AC mode",
-          "comfort_ac_temp": "Temperature in Comfort preset for AC mode",
-          "boost_ac_temp": "Temperature in Boost preset for AC mode",
-          "use_presets_central_config": "Check to use the central presets configuration. Uncheck to use a specific presets configuration for this VTherm"
        }
      },
      "window": {
@@ -144,8 +136,8 @@
          "window_auto_open_threshold": "Recommended value: between 3 and 10. Leave empty if automatic window open detection is not used",
          "window_auto_close_threshold": "Recommended value: 0. Leave empty if automatic window open detection is not used",
          "window_auto_max_duration": "Recommended value: 60 (one hour). Leave empty if automatic window open detection is not used",
-          "use_window_central_config": "Check to use the central window configuration. Uncheck to use a specific window configuration for this VTherm",
-          "window_action": "Action to do if window is deteted as open"
+          "use_window_central_config": "Select to use the central window configuration. Deselect to use a specific window configuration for this VTherm",
+          "window_action": "Action to perform if window is deteted as open"
        }
      },
      "motion": {
@@ -170,7 +162,7 @@
      },
      "power": {
        "title": "Power management",
-        "description": "Power management attributes.\nGives the power and max power sensor of your home.\nThen specify the power consumption of the heater when on.\nAll sensors and device power should have the same unit (kW or W).",
+        "description": "Power management attributes.\nGives the power and max power sensor of your home.\nSpecify the power consumption of the heater when on.\nAll sensors and device power should use the same unit (kW or W).",
        "data": {
          "power_sensor_entity_id": "Power",
          "max_power_sensor_entity_id": "Max power",
@@ -189,51 +181,64 @@
        "description": "Presence management attributes.\nGives the a presence sensor of your home (true is someone is present) and give the corresponding temperature preset setting.",
        "data": {
          "presence_sensor_entity_id": "Presence sensor",
-          "eco_away_temp": "Eco preset",
-          "comfort_away_temp": "Comfort preset",
-          "boost_away_temp": "Boost preset",
-          "frost_away_temp": "Frost protection preset",
-          "eco_ac_away_temp": "Eco preset in AC mode",
-          "comfort_ac_away_temp": "Comfort preset in AC mode",
-          "boost_ac_away_temp": "Boost pres et in AC mode",
-          "use_presence_central_config": "Use central presence configuration"
+          "use_presence_central_config": "Use central presence temperature configuration. Deselect to use specific temperature entities"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Presence sensor entity id",
-          "eco_away_temp": "Temperature in Eco preset when no presence",
-          "comfort_away_temp": "Temperature in Comfort preset when no presence",
-          "boost_away_temp": "Temperature in Boost preset when no presence",
-          "frost_away_temp": "Temperature in Frost protection preset when no presence",
-          "eco_ac_away_temp": "Temperature in Eco preset when no presence in AC mode",
-          "comfort_ac_away_temp": "Temperature in Comfort preset when no presence in AC mode",
-          "boost_ac_away_temp": "Temperature in Boost preset when no presence in AC mode",
-          "use_presence_central_config": "Check to use the central presence configuration. Uncheck to use a specific presence configuration for this VTherm"
+          "presence_sensor_entity_id": "Presence sensor entity id"
        }
      },
      "advanced": {
        "title": "Advanced parameters",
        "description": "Configuration of advanced parameters. Leave the default values if you don't know what you are doing.\nThese parameters can lead to very poor temperature control or bad power regulation.",
        "data": {
-          "minimal_activation_delay": "Minimal activation delay",
+          "minimal_activation_delay": "Minimum activation delay",
          "security_delay_min": "Safety delay (in minutes)",
-          "security_min_on_percent": "Minimal power percent to enable safety mode",
+          "security_min_on_percent": "Minimum power percent to enable safety mode",
          "security_default_on_percent": "Power percent to use in safety mode",
          "use_advanced_central_config": "Use central advanced configuration"
        },
        "data_description": {
          "minimal_activation_delay": "Delay in seconds under which the equipment will not be activated",
          "security_delay_min": "Maximum allowed delay in minutes between two temperature measurements. Above this delay the thermostat will turn to a safety off state",
-          "security_min_on_percent": "Minimal heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
+          "security_min_on_percent": "Minimum heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
          "security_default_on_percent": "The default heating power percent value in safety preset. Set to 0 to switch off heater in safety preset",
          "use_advanced_central_config": "Check to use the central advanced configuration. Uncheck to use a specific advanced configuration for this VTherm"
        }
+      },
+      "central_boiler": {
+        "title": "Control of the central boiler",
+        "description": "Enter the services to call to turn on/off the central boiler. Leave blank if no service call is to be made (in this case, you will have to manage the turning on/off of your central boiler yourself). The service called must be formatted as follows: `entity_id/service_name[/attribute:value]` (/attribute:value is optional)\nFor example:\n- to turn on a switch: `switch.controle_chaudiere/switch.turn_on`\n- to turn off a switch: `switch.controle_chaudiere/switch.turn_off`\n- to program the boiler to 25° and thus force its ignition: `climate.thermostat_chaudiere/climate.set_temperature/temperature:25`\n- to send 10° to the boiler and thus force its extinction: `climate.thermostat_chaudiere/climate.set_temperature/temperature:10`",
+        "data": {
+          "central_boiler_activation_service": "Command to turn-on",
+          "central_boiler_deactivation_service": "Command to turn-off"
+        },
+        "data_description": {
+          "central_boiler_activation_service": "Command to turn-on the central boiler formatted like entity_id/service_name[/attribut:valeur]",
+          "central_boiler_deactivation_service": "Command to turn-off the central boiler formatted like entity_id/service_name[/attribut:valeur]"
+        }
+      },
+      "valve_regulation": {
+        "title": "Self-regulation with valve",
+        "description": "Configuration for self-regulation with direct control of the valve",
+        "data": {
+          "offset_calibration_entity_ids": "Offset calibration entities",
+          "opening_degree_entity_ids": "Opening degree entities",
+          "closing_degree_entity_ids": "Closing degree entities",
+          "proportional_function": "Algorithm"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "The list of the 'offset calibration' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "opening_degree_entity_ids": "The list of the 'opening degree' entities. There should be one per underlying climate entities",
+          "closing_degree_entity_ids": "The list of the 'closing degree' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "proportional_function": "Algorithm to use (TPI is the only one for now)"
+        }
      }
    },
    "error": {
      "unknown": "Unexpected error",
      "unknown_entity": "Unknown entity id",
      "window_open_detection_method": "Only one window open detection method should be used. Use either window sensor or automatic detection through temperature threshold but not both",
-      "no_central_config": "You cannot check 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it."
+      "no_central_config": "You cannot select 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it."
    },
    "abort": {
      "already_configured": "Device is already configured"
@@ -251,80 +256,89 @@
          "thermostat_type": "Only one central configuration type is possible"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Configure your thermostat. You will be able to finalize the configuration when all required parameters are entered.",
+        "menu_options": {
+          "main": "Main attributes",
+          "central_boiler": "Central boiler",
+          "type": "Underlyings",
+          "tpi": "TPI parameters",
+          "features": "Features",
+          "presets": "Presets",
+          "window": "Window detection",
+          "motion": "Motion detection",
+          "power": "Power management",
+          "presence": "Presence detection",
+          "advanced": "Advanced parameters",
+          "auto_start_stop": "Auto start and stop",
+          "valve_regulation": "Valve regulation configuration",
+          "finalize": "All done",
+          "configuration_not_complete": "Configuration not complete"
+        }
+      },
      "main": {
        "title": "Main - {name}",
        "description": "Main mandatory attributes",
        "data": {
          "name": "Name",
          "thermostat_type": "Thermostat type",
-          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "temperature_sensor_entity_id": "Room temperature",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature datetime",
          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id",
          "cycle_min": "Cycle duration (minutes)",
-          "temp_min": "Minimal temperature allowed",
-          "temp_max": "Maximal temperature allowed",
+          "temp_min": "Minimum temperature allowed",
+          "temp_max": "Maximum temperature allowed",
          "step_temperature": "Temperature step",
          "device_power": "Device power",
-          "use_central_mode": "Enable the control by central entity (need central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_central_mode": "Enable the control by central entity (requires central config). Check to enable the control of the VTherm with the select central_mode entities.",
+          "use_main_central_config": "Use additional central main configuration. Check to use the central main configuration (outdoor temperature, min, max, step, ...).",
+          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Room temperature sensor entity id",
+          "last_seen_temperature_sensor_entity_id": "Last seen room temperature sensor entity id. Should be datetime sensor",
+          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+        }
+      },
+      "features": {
+        "title": "Features - {name}",
+        "description": "Thermostat features",
+        "data": {
          "use_window_feature": "Use window detection",
          "use_motion_feature": "Use motion detection",
          "use_power_feature": "Use power management",
          "use_presence_feature": "Use presence detection",
-          "use_main_central_config": "Use central main configuration. Check to use the central main configuration. Uncheck to use a specific main configuration for this VTherm",
-          "add_central_boiler_control": "Add a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after seecting this checkbox to take effect. If one VTherm need heating, the boiler will be turned on. If no VTherm needs heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the next configuration page",
-          "used_by_controls_central_boiler": "Used by central boiler. Check if this VTherm should have control on the central boiler"
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Outdoor temperature sensor entity id. Not used if central configuration is selected"
+          "use_central_boiler_feature": "Use a central boiler. Check to add a control to your central boiler. You will have to configure the VTherm which will have a control of the central boiler after selecting this checkbox to take effect. If one VTherm requires heating, the boiler will be turned on. If no VTherm requires heating, the boiler will be turned off. Commands for turning on/off the central boiler are given in the related configuration page",
+          "use_auto_start_stop_feature": "Use the auto start and stop feature"
        }
      },
      "type": {
        "title": "Entities - {name}",
        "description": "Linked entities attributes",
        "data": {
-          "heater_entity_id": "1st heater switch",
-          "heater_entity2_id": "2nd heater switch",
-          "heater_entity3_id": "3rd heater switch",
-          "heater_entity4_id": "4th heater switch",
+          "underlying_entity_ids": "The device(s) to be controlled",
          "heater_keep_alive": "Switch keep-alive interval in seconds",
          "proportional_function": "Algorithm",
-          "climate_entity_id": "1st underlying climate",
-          "climate_entity2_id": "2nd underlying climate",
-          "climate_entity3_id": "3rd underlying climate",
-          "climate_entity4_id": "4th underlying climate",
          "ac_mode": "AC mode",
-          "valve_entity_id": "1st valve number",
-          "valve_entity2_id": "2nd valve number",
-          "valve_entity3_id": "3rd valve number",
-          "valve_entity4_id": "4th valve number",
          "auto_regulation_mode": "Self-regulation",
          "auto_regulation_dtemp": "Regulation threshold",
-          "auto_regulation_periode_min": "Regulation minimal period",
+          "auto_regulation_periode_min": "Regulation minimum period",
          "auto_regulation_use_device_temp": "Use internal temperature of the underlying",
          "inverse_switch_command": "Inverse switch command",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
-          "heater_entity_id": "Mandatory heater entity id",
-          "heater_entity2_id": "Optional 2nd Heater entity id. Leave empty if not used",
-          "heater_entity3_id": "Optional 3rd Heater entity id. Leave empty if not used",
-          "heater_entity4_id": "Optional 4th Heater entity id. Leave empty if not used",
+          "underlying_entity_ids": "The device(s) to be controlled - 1 is required",
          "heater_keep_alive": "Optional heater switch state refresh interval. Leave empty if not required.",
          "proportional_function": "Algorithm to use (TPI is the only one for now)",
-          "climate_entity_id": "Underlying climate entity id",
-          "climate_entity2_id": "2nd underlying climate entity id",
-          "climate_entity3_id": "3rd underlying climate entity id",
-          "climate_entity4_id": "4th underlying climate entity id",
          "ac_mode": "Use the Air Conditioning (AC) mode",
-          "valve_entity_id": "1st valve number entity id",
-          "valve_entity2_id": "2nd valve number entity id",
-          "valve_entity3_id": "3rd valve number entity id",
-          "valve_entity4_id": "4th valve number entity id",
          "auto_regulation_mode": "Auto adjustment of the target temperature",
          "auto_regulation_dtemp": "The threshold in ° (or % for valve) under which the temperature change will not be sent",
          "auto_regulation_periode_min": "Duration in minutes between two regulation update",
          "auto_regulation_use_device_temp": "Use the eventual internal temperature sensor of the underlying to speedup the self-regulation",
          "inverse_switch_command": "For switch with pilot wire and diode you may need to invert the command",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -343,26 +357,9 @@
      },
      "presets": {
        "title": "Presets - {name}",
-        "description": "For each preset set the target temperature (0 to ignore preset)",
+        "description": "Check if the thermostat will use central presets. Uncheck and the thermostat will have its own preset entities",
        "data": {
-          "eco_temp": "Eco preset",
-          "comfort_temp": "Comfort preset",
-          "boost_temp": "Boost preset",
-          "frost_temp": "Frost protection preset",
-          "eco_ac_temp": "Eco preset for AC mode",
-          "comfort_ac_temp": "Comfort preset for AC mode",
-          "boost_ac_temp": "Boost preset for AC mode",
          "use_presets_central_config": "Use central presets configuration"
-        },
-        "data_description": {
-          "eco_temp": "Temperature in Eco preset",
-          "comfort_temp": "Temperature in Comfort preset",
-          "boost_temp": "Temperature in Boost preset",
-          "frost_temp": "Temperature in Frost protection preset",
-          "eco_ac_temp": "Temperature in Eco preset for AC mode",
-          "comfort_ac_temp": "Temperature in Comfort preset for AC mode",
-          "boost_ac_temp": "Temperature in Boost preset for AC mode",
-          "use_presets_central_config": "Check to use the central presets configuration. Uncheck to use a specific presets configuration for this VTherm"
        }
      },
      "window": {
@@ -428,44 +425,57 @@
        "description": "Presence management attributes.\nGives the a presence sensor of your home (true is someone is present) and give the corresponding temperature preset setting.",
        "data": {
          "presence_sensor_entity_id": "Presence sensor",
-          "eco_away_temp": "Eco away preset",
-          "comfort_away_temp": "Comfort away preset",
-          "boost_away_temp": "Boost away preset",
-          "frost_away_temp": "Frost protection preset",
-          "eco_ac_away_temp": "Eco away preset in AC mode",
-          "comfort_ac_away_temp": "Comfort away preset in AC mode",
-          "boost_ac_away_temp": "Boost away preset in AC mode",
-          "use_presence_central_config": "Use central presence configuration"
+          "use_presence_central_config": "Use central presence temperature configuration. Uncheck to use specific temperature entities"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Presence sensor entity id",
-          "eco_away_temp": "Temperature in Eco preset when no presence",
-          "comfort_away_temp": "Temperature in Comfort preset when no presence",
-          "boost_away_temp": "Temperature in Boost preset when no presence",
-          "frost_away_temp": "Temperature in Frost protection preset when no presence",
-          "eco_ac_away_temp": "Temperature in Eco preset when no presence in AC mode",
-          "comfort_ac_away_temp": "Temperature in Comfort preset when no presence in AC mode",
-          "boost_ac_away_temp": "Temperature in Boost preset when no presence in AC mode",
-          "use_presence_central_config": "Check to use the central presence configuration. Uncheck to use a specific presence configuration for this VTherm"
+          "presence_sensor_entity_id": "Presence sensor entity id"
        }
      },
      "advanced": {
        "title": "Advanced - {name}",
        "description": "Advanced parameters. Leave the default values if you don't know what you are doing.\nThese parameters can lead to very poor temperature control or bad power regulation.",
        "data": {
-          "minimal_activation_delay": "Minimal activation delay",
+          "minimal_activation_delay": "Minimum activation delay",
          "security_delay_min": "Safety delay (in minutes)",
-          "security_min_on_percent": "Minimal power percent to enable safety mode",
+          "security_min_on_percent": "Minimum power percent to enable safety mode",
          "security_default_on_percent": "Power percent to use in safety mode",
          "use_advanced_central_config": "Use central advanced configuration"
        },
        "data_description": {
          "minimal_activation_delay": "Delay in seconds under which the equipment will not be activated",
          "security_delay_min": "Maximum allowed delay in minutes between two temperature measurements. Above this delay the thermostat will turn to a safety off state",
-          "security_min_on_percent": "Minimal heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
+          "security_min_on_percent": "Minimum heating percent value for safety preset activation. Below this amount of power percent the thermostat won't go into safety preset",
          "security_default_on_percent": "The default heating power percent value in safety preset. Set to 0 to switch off heater in safety preset",
          "use_advanced_central_config": "Check to use the central advanced configuration. Uncheck to use a specific advanced configuration for this VTherm"
        }
+      },
+      "central_boiler": {
+        "title": "Control of the central boiler - {name}",
+        "description": "Enter the services to call to turn on/off the central boiler. Leave blank if no service call is to be made (in this case, you will have to manage the turning on/off of your central boiler yourself). The service called must be formatted as follows: `entity_id/service_name[/attribute:value]` (/attribute:value is optional)\nFor example:\n- to turn on a switch: `switch.controle_chaudiere/switch.turn_on`\n- to turn off a switch: `switch.controle_chaudiere/switch.turn_off`\n- to program the boiler to 25° and thus force its ignition: `climate.thermostat_chaudiere/climate.set_temperature/temperature:25`\n- to send 10° to the boiler and thus force its extinction: `climate.thermostat_chaudiere/climate.set_temperature/temperature:10`",
+        "data": {
+          "central_boiler_activation_service": "Command to turn-on",
+          "central_boiler_deactivation_service": "Command to turn-off"
+        },
+        "data_description": {
+          "central_boiler_activation_service": "Command to turn-on the central boiler formatted like entity_id/service_name[/attribut:valeur]",
+          "central_boiler_deactivation_service": "Command to turn-off the central boiler formatted like entity_id/service_name[/attribut:valeur]"
+        }
+      },
+      "valve_regulation": {
+        "title": "Self-regulation with valve - {name}",
+        "description": "Configuration for self-regulation with direct control of the valve",
+        "data": {
+          "offset_calibration_entity_ids": "Offset calibration entities",
+          "opening_degree_entity_ids": "Opening degree entities",
+          "closing_degree_entity_ids": "Closing degree entities",
+          "proportional_function": "Algorithm"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "The list of the 'offset calibration' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "opening_degree_entity_ids": "The list of the 'opening degree' entities. There should be one per underlying climate entities",
+          "closing_degree_entity_ids": "The list of the 'closing degree' entities. Set it if your TRV have the entity for better regulation. There should be one per underlying climate entities",
+          "proportional_function": "Algorithm to use (TPI is the only one for now)"
+        }
      }
    },
    "error": {
@@ -473,7 +483,8 @@
      "unknown_entity": "Unknown entity id",
      "window_open_detection_method": "Only one window open detection method should be used. Use either window sensor or automatic detection through temperature threshold but not both",
      "no_central_config": "You cannot check 'use central configuration' because no central configuration was found. You need to create a Versatile Thermostat of type 'Central Configuration' to use it.",
-      "service_configuration_format": "The format of the service configuration is wrong"
+      "service_configuration_format": "The format of the service configuration is wrong",
+      "valve_regulation_nb_entities_incorrect": "The number of valve entities for valve regulation should be equal to the number of underlyings"
    },
    "abort": {
      "already_configured": "Device is already configured"
@@ -495,7 +506,8 @@
        "auto_regulation_medium": "Medium",
        "auto_regulation_light": "Light",
        "auto_regulation_expert": "Expert",
-        "auto_regulation_none": "No auto-regulation"
+        "auto_regulation_none": "No auto-regulation",
+        "auto_regulation_valve": "Direct control of valve"
      }
    },
    "auto_fan_mode": {
@@ -522,6 +534,14 @@
        "comfort": "Comfort",
        "boost": "Boost"
      }
+    },
+    "auto_start_stop": {
+      "options": {
+        "auto_start_stop_none": "No auto start/stop",
+        "auto_start_stop_slow": "Slow detection",
+        "auto_start_stop_medium": "Medium detection",
+        "auto_start_stop_fast": "Fast detection"
+      }
    }
  },
  "entity": {
@@ -532,11 +552,59 @@
            "state": {
              "power": "Shedding",
              "security": "Safety",
-              "none": "Manual"
+              "none": "Manual",
+              "frost": "Frost"
            }
          }
        }
      }
+    },
+    "number": {
+      "frost_temp": {
+        "name": "Frost"
+      },
+      "eco_temp": {
+        "name": "Eco"
+      },
+      "comfort_temp": {
+        "name": "Comfort"
+      },
+      "boost_temp": {
+        "name": "Boost"
+      },
+      "frost_ac_temp": {
+        "name": "Frost ac"
+      },
+      "eco_ac_temp": {
+        "name": "Eco ac"
+      },
+      "comfort_ac_temp": {
+        "name": "Comfort ac"
+      },
+      "boost_ac_temp": {
+        "name": "Boost ac"
+      },
+      "frost_away_temp": {
+        "name": "Frost away"
+      },
+      "eco_away_temp": {
+        "name": "Eco away"
+      },
+      "comfort_away_temp": {
+        "name": "Comfort away"
+      },
+      "boost_away_temp": {
+        "name": "Boost away"
+      },
+      "eco_ac_away_temp": {
+        "name": "Eco ac away"
+      },
+      "comfort_ac_away_temp": {
+        "name": "Comfort ac away"
+      },
+      "boost_ac_away_temp": {
+        "name": "Boost ac away"
+      }
    }
  }
 }
--- a/custom_components/versatile_thermostat/translations/fr.json
+++ b/custom_components/versatile_thermostat/translations/fr.json
@@ -12,78 +12,87 @@
          "thermostat_type": "Un seul thermostat de type Configuration centrale est possible."
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Paramétrez votre thermostat. Vous pourrez finaliser la configuration quand tous les paramètres auront été saisis.",
+        "menu_options": {
+          "main": "Principaux Attributs",
+          "central_boiler": "Chauffage central",
+          "type": "Sous-jacents",
+          "tpi": "Paramètres TPI",
+          "features": "Fonctions",
+          "presets": "Pre-réglages",
+          "window": "Détection d'ouverture",
+          "motion": "Détection de mouvement",
+          "power": "Gestion de la puissance",
+          "presence": "Détection de présence",
+          "advanced": "Paramètres avancés",
+          "auto_start_stop": "Allumage/extinction automatique",
+          "valve_regulation": "Configuration de la regulation par vanne",
+          "finalize": "Finaliser la création",
+          "configuration_not_complete": "Configuration incomplète"
+        }
+      },
      "main": {
        "title": "Ajout d'un nouveau thermostat",
        "description": "Principaux attributs obligatoires",
        "data": {
          "name": "Nom",
          "thermostat_type": "Type de thermostat",
-          "temperature_sensor_entity_id": "Température sensor entity id",
-          "external_temperature_sensor_entity_id": "Température exterieure sensor entity id",
+          "temperature_sensor_entity_id": "Capteur de température",
+          "last_seen_temperature_sensor_entity_id": "Dernière vue capteur de température",
+          "external_temperature_sensor_entity_id": "Capteur de température exterieure",
          "cycle_min": "Durée du cycle (minutes)",
          "temp_min": "Température minimale permise",
          "temp_max": "Température maximale permise",
          "step_temperature": "Pas de température",
          "device_power": "Puissance de l'équipement",
          "use_central_mode": "Autoriser le controle par une entity centrale ('nécessite une config. centrale`). Cochez pour autoriser le contrôle du VTherm par la liste déroulante 'central_mode' de l'entité configuration centrale.",
+          "use_main_central_config": "Utiliser la configuration centrale supplémentaire. Cochez pour utiliser la configuration centrale supplémentaire (température externe, min, max, pas, ...)",
+          "used_by_controls_central_boiler": "Utilisé par la chaudière centrale. Cochez si ce VTherm doit contrôler la chaudière centrale."
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Id d'entité du capteur de température",
+          "last_seen_temperature_sensor_entity_id": "Id d'entité du capteur donnant la date et heure de dernière vue capteur de température. L'état doit être au format date heure (ex: 2024-03-31T17:07:03+00:00)",
+          "external_temperature_sensor_entity_id": "Entity id du capteur de température extérieure. Non utilisé si une configuration centrale est définie"
+        }
+      },
+      "features": {
+        "title": "Fonctions",
+        "description": "Fonctions du thermostat à utiliser",
+        "data": {
          "use_window_feature": "Avec détection des ouvertures",
          "use_motion_feature": "Avec détection de mouvement",
          "use_power_feature": "Avec gestion de la puissance",
          "use_presence_feature": "Avec détection de présence",
-          "use_main_central_config": "Utiliser la configuration centrale. Cochez pour utiliser la configuration centrale. Décochez et saisissez les attributs pour utiliser une configuration spécifique.",
-          "add_central_boiler_control": "Ajouter une chaudière centrale. Cochez pour ajouter un controle sur une chaudière centrale. Vous devrez ensuite configurer les VTherms qui commande la chaudière centrale pour que cette option prenne effet. Si au moins un des VTherm a besoin de chauffer, la chaudière centrale sera activée. Si aucun VTherm n'a besoin de chauffer, elle sera éteinte. Les commandes pour allumer/éteindre la chaudière centrale sont données dans la page de configuration suivante.",
-          "used_by_controls_central_boiler": "Utilisé par la chaudière centrale. Cochez si ce VTherm doit contrôler la chaudière centrale."
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Entity id du capteur de température extérieure."
+          "use_central_boiler_feature": "Ajouter une chaudière centrale. Cochez pour ajouter un controle sur une chaudière centrale. Vous devrez ensuite configurer les VTherms qui commande la chaudière centrale pour que cette option prenne effet. Si au moins un des VTherm a besoin de chauffer, la chaudière centrale sera activée. Si aucun VTherm n'a besoin de chauffer, elle sera éteinte. Les commandes pour allumer/éteindre la chaudière centrale sont données dans la page de configuration suivante.",
+          "use_auto_start_stop_feature": "Avec démarrage et extinction automatique"
        }
      },
      "type": {
        "title": "Entité(s) liée(s)",
        "description": "Attributs de(s) l'entité(s) liée(s)",
        "data": {
-          "heater_entity_id": "1er radiateur",
-          "heater_entity2_id": "2ème radiateur",
-          "heater_entity3_id": "3ème radiateur",
-          "heater_entity4_id": "4ème radiateur",
+          "underlying_entity_ids": "Les équipements à controller",
          "heater_keep_alive": "keep-alive (sec)",
          "proportional_function": "Algorithme",
-          "climate_entity_id": "Thermostat sous-jacent",
-          "climate_entity2_id": "2ème thermostat sous-jacent",
-          "climate_entity3_id": "3ème thermostat sous-jacent",
-          "climate_entity4_id": "4ème thermostat sous-jacent",
          "ac_mode": "AC mode ?",
-          "valve_entity_id": "1ère valve number",
-          "valve_entity2_id": "2ème valve number",
-          "valve_entity3_id": "3ème valve number",
-          "valve_entity4_id": "4ème valve number",
          "auto_regulation_mode": "Auto-régulation",
          "auto_regulation_dtemp": "Seuil de régulation",
          "auto_regulation_periode_min": "Période minimale de régulation",
-          "auto_regulation_use_device_temp": "Utiliser la température interne du sous-jacent",
+          "auto_regulation_use_device_temp": "Compenser la température interne du sous-jacent",
          "inverse_switch_command": "Inverser la commande",
          "auto_fan_mode": " Auto ventilation mode"
        },
        "data_description": {
-          "heater_entity_id": "Entity id du 1er radiateur obligatoire",
-          "heater_entity2_id": "Optionnel entity id du 2ème radiateur",
-          "heater_entity3_id": "Optionnel entity id du 3ème radiateur",
-          "heater_entity4_id": "Optionnel entity id du 4ème radiateur",
+          "underlying_entity_ids": "La liste des équipements qui seront controlés par ce VTherm",
          "heater_keep_alive": "Intervalle de rafraichissement du switch en secondes. Laisser vide pour désactiver. À n'utiliser que pour les switchs qui le nécessite.",
          "proportional_function": "Algorithme à utiliser (Seul TPI est disponible pour l'instant)",
-          "climate_entity_id": "Entity id du thermostat sous-jacent",
-          "climate_entity2_id": "Entity id du 2ème thermostat sous-jacent",
-          "climate_entity3_id": "Entity id du 3ème thermostat sous-jacent",
-          "climate_entity4_id": "Entity id du 4ème thermostat sous-jacent",
          "ac_mode": "Utilisation du mode Air Conditionné (AC)",
-          "valve_entity_id": "Entity id de la 1ère valve",
-          "valve_entity2_id": "Entity id de la 2ème valve",
-          "valve_entity3_id": "Entity id de la 3ème valve",
-          "valve_entity4_id": "Entity id de la 4ème valve",
-          "auto_regulation_mode": "Ajustement automatique de la température cible",
-          "auto_regulation_dtemp": "Le seuil en ° (ou % pour les valves) en-dessous duquel la régulation ne sera pas envoyée",
+          "auto_regulation_mode": "Utilisation de l'auto-régulation faite par VTherm",
+          "auto_regulation_dtemp": "Le seuil en ° (ou % pour les vannes) en-dessous duquel la régulation ne sera pas envoyée",
          "auto_regulation_periode_min": "La durée en minutes entre deux mise à jour faites par la régulation",
-          "auto_regulation_use_device_temp": "Utiliser la temperature interne du sous-jacent pour accélérer l'auto-régulation",
+          "auto_regulation_use_device_temp": "Compenser la temperature interne du sous-jacent pour accélérer l'auto-régulation",
          "inverse_switch_command": "Inverse la commande du switch pour une installation avec fil pilote et diode",
          "auto_fan_mode": "Active la ventilation automatiquement en cas d'écart important"
        }
@@ -103,27 +112,10 @@
        }
      },
      "presets": {
-        "title": "Presets",
-        "description": "Pour chaque preset, donnez la température cible (0 pour ignorer le preset)",
+        "title": "Pre-réglages",
+        "description": "Cochez pour que ce thermostat utilise les pré-réglages de la configuration centrale. Décochez pour utiliser des entités de température spécifiques",
        "data": {
-          "eco_temp": "Preset Eco",
-          "comfort_temp": "Preset Comfort",
-          "boost_temp": "Preset Boost",
-          "frost_temp": "Preset Hors-gel",
-          "eco_ac_temp": "Preset Eco en mode AC",
-          "comfort_ac_temp": "Preset Comfort en mode AC",
-          "boost_ac_temp": "Preset Boost en mode AC",
-          "use_presets_central_config": "Utiliser la configuration des presets centrale"
-        },
-        "data_description": {
-          "eco_temp": "Température en preset Eco",
-          "comfort_temp": "Température en preset Comfort",
-          "boost_temp": "Température en preset Boost",
-          "frost_temp": "Température en preset Hors-gel",
-          "eco_ac_temp": "Température en preset Eco en mode AC",
-          "comfort_ac_temp": "Température en preset Comfort en mode AC",
-          "boost_ac_temp": "Température en preset Boost en mode AC",
-          "use_presets_central_config": "Cochez pour utiliser la configuration des presets centrale. Décochez et saisissez les attributs pour utiliser une configuration des presets spécifique"
+          "use_presets_central_config": "Utiliser la configuration des pré-réglages centrale"
        }
      },
      "window": {
@@ -186,28 +178,13 @@
      },
      "presence": {
        "title": "Gestion de la présence",
-        "description": "Donnez un capteur de présence (true si quelqu'un est présent) et les températures cibles à utiliser en cas d'absence.",
+        "description": "Donnez un capteur de présence (true si quelqu'un est présent) et les températures cibles à utiliser en cas d'abs.",
        "data": {
          "presence_sensor_entity_id": "Capteur de présence",
-          "eco_away_temp": "preset Eco",
-          "comfort_away_temp": "preset Comfort",
-          "boost_away_temp": "preset Boost",
-          "frost_away_temp": "preset Hors-gel",
-          "eco_ac_away_temp": "preset Eco en mode AC",
-          "comfort_ac_away_temp": "preset Comfort en mode AC",
-          "boost_ac_away_temp": "preset Boost en mode AC",
-          "use_presence_central_config": "Utiliser la configuration centrale de la présence"
+          "use_presence_central_config": "Utiliser la configuration centrale des températures en cas d'absence. Décochez pour avoir des entités de température dédiées"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Id d'entité du capteur de présence",
-          "eco_away_temp": "Température en preset Eco en cas d'absence",
-          "comfort_away_temp": "Température en preset Comfort en cas d'absence",
-          "boost_away_temp": "Température en preset Boost en cas d'absence",
-          "frost_away_temp": "Température en preset Hors-gel en cas d'absence",
-          "eco_ac_away_temp": "Température en preset Eco en cas d'absence en mode AC",
-          "comfort_ac_away_temp": "Température en preset Comfort en cas d'absence en mode AC",
-          "boost_ac_away_temp": "Température en preset Boost en cas d'absence en mode AC",
-          "use_presence_central_config": "Cochez pour utiliser la configuration centrale de la présence. Décochez et saisissez les attributs pour utiliser une configuration spécifique de la présence"
+          "presence_sensor_entity_id": "Id d'entité du capteur de présence"
        }
      },
      "advanced": {
@@ -239,6 +216,22 @@
          "central_boiler_activation_service": "Commande à éxecuter pour allumer la chaudière centrale au format entity_id/service_name[/attribut:valeur]",
          "central_boiler_deactivation_service": "Commande à éxecuter pour étiendre la chaudière centrale au format entity_id/service_name[/attribut:valeur]"
        }
+      },
+      "valve_regulation": {
+        "title": "Auto-régulation par vanne",
+        "description": "Configuration de l'auto-régulation par controle direct de la vanne",
+        "data": {
+          "offset_calibration_entity_ids": "Entités de 'calibrage du décalage''",
+          "opening_degree_entity_ids": "Entités 'ouverture de vanne'",
+          "closing_degree_entity_ids": "Entités 'fermeture de la vanne'",
+          "proportional_function": "Algorithme"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "La liste des entités 'calibrage du décalage' (offset calibration). Configurez le si votre TRV possède cette fonction pour une meilleure régulation. Il doit y en avoir une par entité climate sous-jacente",
+          "opening_degree_entity_ids": "La liste des entités 'ouverture de vanne'. Il doit y en avoir une par entité climate sous-jacente",
+          "closing_degree_entity_ids": "La liste des entités 'fermeture de la vanne'. Configurez le si votre TRV possède cette fonction pour une meilleure régulation. Il doit y en avoir une par entité climate sous-jacente",
+          "proportional_function": "Algorithme à utiliser (seulement TPI est disponible)"
+        }
      }
    },
    "error": {
@@ -263,78 +256,87 @@
          "thermostat_type": "Un seul thermostat de type Configuration centrale est possible."
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Paramétrez votre thermostat. Vous pourrez finaliser la configuration quand tous les paramètres auront été saisis.",
+        "menu_options": {
+          "main": "Principaux Attributs",
+          "central_boiler": "Chauffage central",
+          "type": "Sous-jacents",
+          "tpi": "Paramètres TPI",
+          "features": "Fonctions",
+          "presets": "Pre-réglages",
+          "window": "Détection d'ouvertures",
+          "motion": "Détection de mouvement",
+          "power": "Gestion de la puissance",
+          "presence": "Détection de présence",
+          "advanced": "Paramètres avancés",
+          "auto_start_stop": "Allumage/extinction automatique",
+          "valve_regulation": "Configuration de la regulation par vanne",
+          "finalize": "Finaliser les modifications",
+          "configuration_not_complete": "Configuration incomplète"
+        }
+      },
      "main": {
        "title": "Attributs - {name}",
        "description": "Principaux attributs obligatoires",
        "data": {
          "name": "Nom",
          "thermostat_type": "Type de thermostat",
-          "temperature_sensor_entity_id": "Température sensor entity id",
-          "external_temperature_sensor_entity_id": "Température exterieure sensor entity id",
+          "temperature_sensor_entity_id": "Capteur de température",
+          "last_seen_temperature_sensor_entity_id": "Dernière vue capteur de température",
+          "external_temperature_sensor_entity_id": "Capteur de température exterieure",
          "cycle_min": "Durée du cycle (minutes)",
          "temp_min": "Température minimale permise",
          "temp_max": "Température maximale permise",
          "step_temperature": "Pas de température",
          "device_power": "Puissance de l'équipement",
          "use_central_mode": "Autoriser le controle par une entity centrale ('nécessite une config. centrale`). Cochez pour autoriser le contrôle du VTherm par la liste déroulante 'central_mode' de l'entité configuration centrale.",
+          "use_main_central_config": "Utiliser la configuration centrale supplémentaire. Cochez pour utiliser la configuration centrale supplémentaire (température externe, min, max, pas, ...)",
+          "used_by_controls_central_boiler": "Utilisé par la chaudière centrale. Cochez si ce VTherm doit contrôler la chaudière centrale."
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "Id d'entité du capteur de température",
+          "last_seen_temperature_sensor_entity_id": "Id d'entité du capteur donnant la date et heure de dernière vue capteur de température. L'état doit être au format date heure (ex: 2024-03-31T17:07:03+00:00)",
+          "external_temperature_sensor_entity_id": "Entity id du capteur de température extérieure. Non utilisé si une configuration centrale est définie"
+        }
+      },
+      "features": {
+        "title": "Fonctions - {name}",
+        "description": "Fonctions du thermostat à utiliser",
+        "data": {
          "use_window_feature": "Avec détection des ouvertures",
          "use_motion_feature": "Avec détection de mouvement",
          "use_power_feature": "Avec gestion de la puissance",
          "use_presence_feature": "Avec détection de présence",
-          "use_main_central_config": "Utiliser la configuration centrale. Cochez pour utiliser la configuration centrale. Décochez et saisissez les attributs pour utiliser une configuration spécifique.",
-          "add_central_boiler_control": "Ajouter une chaudière centrale. Cochez pour ajouter un controle sur une chaudière centrale. Vous devrez ensuite configurer les VTherms qui commande la chaudière centrale pour que cette option prenne effet. Si au moins un des VTherm a besoin de chauffer, la chaudière centrale sera activée. Si aucun VTherm n'a besoin de chauffer, elle sera éteinte. Les commandes pour allumer/éteindre la chaudière centrale sont données dans la page de configuration suivante.",
-          "used_by_controls_central_boiler": "Utilisé par la chaudière centrale. Cochez si ce VTherm doit contrôler la chaudière centrale."
-        },
-        "data_description": {
-          "external_temperature_sensor_entity_id": "Entity id du capteur de température extérieure. N'est pas utilisé si la configuration centrale est utilisée."
+          "use_central_boiler_feature": "Ajouter une chaudière centrale. Cochez pour ajouter un controle sur une chaudière centrale. Vous devrez ensuite configurer les VTherms qui commande la chaudière centrale pour que cette option prenne effet. Si au moins un des VTherm a besoin de chauffer, la chaudière centrale sera activée. Si aucun VTherm n'a besoin de chauffer, elle sera éteinte. Les commandes pour allumer/éteindre la chaudière centrale sont données dans la page de configuration suivante.",
+          "use_auto_start_stop_feature": "Avec démarrage et extinction automatique"
        }
      },
      "type": {
-        "title": "Entités - {name}",
+        "title": "Entité(s) liée(s) - {name}",
        "description": "Attributs de(s) l'entité(s) liée(s)",
        "data": {
-          "heater_entity_id": "1er radiateur",
-          "heater_entity2_id": "2ème radiateur",
-          "heater_entity3_id": "3ème radiateur",
-          "heater_entity4_id": "4ème radiateur",
-          "heater_keep_alive": "Keep-alive (sec)",
+          "underlying_entity_ids": "Les équipements à controller",
+          "heater_keep_alive": "keep-alive (sec)",
          "proportional_function": "Algorithme",
-          "climate_entity_id": "Thermostat sous-jacent",
-          "climate_entity2_id": "2ème thermostat sous-jacent",
-          "climate_entity3_id": "3ème thermostat sous-jacent",
-          "climate_entity4_id": "4ème thermostat sous-jacent",
          "ac_mode": "AC mode ?",
-          "valve_entity_id": "1ère valve",
-          "valve_entity2_id": "2ème valve",
-          "valve_entity3_id": "3ème valve",
-          "valve_entity4_id": "4ème valve",
-          "auto_regulation_mode": "Auto-regulation",
+          "auto_regulation_mode": "Auto-régulation",
          "auto_regulation_dtemp": "Seuil de régulation",
          "auto_regulation_periode_min": "Période minimale de régulation",
-          "auto_regulation_use_device_temp": "Utiliser la température interne du sous-jacent",
+          "auto_regulation_use_device_temp": "Compenser la température interne du sous-jacent",
          "inverse_switch_command": "Inverser la commande",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": " Auto ventilation mode"
        },
        "data_description": {
-          "heater_entity_id": "Entity id du 1er radiateur obligatoire",
-          "heater_entity2_id": "Optionnel entity id du 2ème radiateur",
-          "heater_entity3_id": "Optionnel entity id du 3ème radiateur",
-          "heater_entity4_id": "Optionnel entity id du 4ème radiateur",
+          "underlying_entity_ids": "La liste des équipements qui seront controlés par ce VTherm",
          "heater_keep_alive": "Intervalle de rafraichissement du switch en secondes. Laisser vide pour désactiver. À n'utiliser que pour les switchs qui le nécessite.",
          "proportional_function": "Algorithme à utiliser (Seul TPI est disponible pour l'instant)",
-          "climate_entity_id": "Entity id du thermostat sous-jacent",
-          "climate_entity2_id": "Entity id du 2ème thermostat sous-jacent",
-          "climate_entity3_id": "Entity id du 3ème thermostat sous-jacent",
-          "climate_entity4_id": "Entity id du 4ème thermostat sous-jacent",
          "ac_mode": "Utilisation du mode Air Conditionné (AC)",
-          "valve_entity_id": "Entity id de la 1ère valve",
-          "valve_entity2_id": "Entity id de la 2ème valve",
-          "valve_entity3_id": "Entity id de la 3ème valve",
-          "valve_entity4_id": "Entity id de la 4ème valve",
-          "auto_regulation_mode": "Ajustement automatique de la consigne",
-          "auto_regulation_dtemp": "Le seuil en ° (ou % pour les valves) en-dessous duquel la régulation ne sera pas envoyée",
+          "auto_regulation_mode": "Utilisation de l'auto-régulation faite par VTherm",
+          "auto_regulation_dtemp": "Le seuil en ° (ou % pour les vannes) en-dessous duquel la régulation ne sera pas envoyée",
          "auto_regulation_periode_min": "La durée en minutes entre deux mise à jour faites par la régulation",
-          "auto_regulation_use_device_temp": "Utiliser la temperature interne du sous-jacent pour accélérer l'auto-régulation",
+          "auto_regulation_use_device_temp": "Compenser la temperature interne du sous-jacent pour accélérer l'auto-régulation",
          "inverse_switch_command": "Inverse la commande du switch pour une installation avec fil pilote et diode",
          "auto_fan_mode": "Active la ventilation automatiquement en cas d'écart important"
        }
@@ -349,26 +351,9 @@
      },
      "presets": {
        "title": "Pre-réglages - {name}",
-        "description": "Réglage des presets. Donnez la température cible (0 pour ignorer le preset)",
+        "description": "Cochez pour que ce thermostat utilise les pré-réglages de la configuration centrale. Décochez pour utiliser des entités de température spécifiques",
        "data": {
-          "eco_temp": "Preset Eco",
-          "comfort_temp": "Preset Comfort",
-          "boost_temp": "Preset Boost",
-          "frost_temp": "Preset Hors-gel",
-          "eco_ac_temp": "Preset Eco en mode AC",
-          "comfort_ac_temp": "Preset Comfort en mode AC",
-          "boost_ac_temp": "Preset Boost en mode AC",
-          "use_presets_central_config": "Utiliser la configuration centrale des presets"
-        },
-        "data_description": {
-          "eco_temp": "Température en preset Eco",
-          "comfort_temp": "Température en preset Comfort",
-          "boost_temp": "Température en preset Boost",
-          "frost_temp": "Température en preset Hors-gel",
-          "eco_ac_temp": "Température en preset Eco en mode AC",
-          "comfort_ac_temp": "Température en preset Comfort en mode AC",
-          "boost_ac_temp": "Température en preset Boost en mode AC",
-          "use_presets_central_config": "Cochez pour utiliser la configuration centrale des presets. Décochez et saisissez les attributs pour utiliser une configuration des presets spécifique"
+          "use_presets_central_config": "Utiliser la configuration des pré-réglages centrale"
        }
      },
      "window": {
@@ -431,28 +416,13 @@
      },
      "presence": {
        "title": "Présence - {name}",
-        "description": "Donnez un capteur de présence (true si quelqu'un est présent) et les températures cibles à utiliser en cas d'absence.",
+        "description": "Donnez un capteur de présence (true si quelqu'un est présent) et les températures cibles à utiliser en cas d'abs.",
        "data": {
          "presence_sensor_entity_id": "Capteur de présence",
-          "eco_away_temp": "preset Eco",
-          "comfort_away_temp": "preset Comfort",
-          "boost_away_temp": "preset Boost",
-          "frost_away_temp": "preset Hors-gel",
-          "eco_ac_away_temp": "preset Eco en mode AC",
-          "comfort_ac_away_temp": "preset Comfort en mode AC",
-          "boost_ac_away_temp": "preset Boost en mode AC",
-          "use_presence_central_config": "Utiliser la configuration centrale de la présence"
+          "use_presence_central_config": "Utiliser la configuration centrale des températures en cas d'absence. Décochez pour avoir des entités de température dédiées"
        },
        "data_description": {
-          "presence_sensor_entity_id": "Id d'entité du capteur de présence",
-          "eco_away_temp": "Température en preset Eco en cas d'absence",
-          "comfort_away_temp": "Température en preset Comfort en cas d'absence",
-          "boost_away_temp": "Température en preset Boost en cas d'absence",
-          "frost_away_temp": "Température en preset Hors-gel en cas d'absence",
-          "eco_ac_away_temp": "Température en preset Eco en cas d'absence en mode AC",
-          "comfort_ac_away_temp": "Température en preset Comfort en cas d'absence en mode AC",
-          "boost_ac_away_temp": "Température en preset Boost en cas d'absence en mode AC",
-          "use_presence_central_config": "Cochez pour utiliser la configuration centrale de la présence. Décochez et saisissez les attributs pour utiliser une configuration spécifique de la présence"
+          "presence_sensor_entity_id": "Id d'entité du capteur de présence"
        }
      },
      "advanced": {
@@ -484,6 +454,22 @@
          "central_boiler_activation_service": "Commande à éxecuter pour allumer la chaudière centrale au format entity_id/service_name[/attribut:valeur]",
          "central_boiler_deactivation_service": "Commande à éxecuter pour étiendre la chaudière centrale au format entity_id/service_name[/attribut:valeur]"
        }
+      },
+      "valve_regulation": {
+        "title": "Auto-régulation par vanne - {name}",
+        "description": "Configuration de l'auto-régulation par controle direct de la vanne",
+        "data": {
+          "offset_calibration_entity_ids": "Entités de 'calibrage du décalage''",
+          "opening_degree_entity_ids": "Entités 'ouverture de vanne'",
+          "closing_degree_entity_ids": "Entités 'fermeture de la vanne'",
+          "proportional_function": "Algorithme"
+        },
+        "data_description": {
+          "offset_calibration_entity_ids": "La liste des entités 'calibrage du décalage' (offset calibration). Configurez le si votre TRV possède cette fonction pour une meilleure régulation. Il doit y en avoir une par entité climate sous-jacente",
+          "opening_degree_entity_ids": "La liste des entités 'ouverture de vanne'. Il doit y en avoir une par entité climate sous-jacente",
+          "closing_degree_entity_ids": "La liste des entités 'fermeture de la vanne'. Configurez le si votre TRV possède cette fonction pour une meilleure régulation. Il doit y en avoir une par entité climate sous-jacente",
+          "proportional_function": "Algorithme à utiliser (seulement TPI est disponible)"
+        }
      }
    },
    "error": {
@@ -491,7 +477,8 @@
      "unknown_entity": "entity id inconnu",
      "window_open_detection_method": "Une seule méthode de détection des ouvertures ouvertes doit être utilisée. Utilisez le détecteur d'ouverture ou les seuils de température mais pas les deux.",
      "no_central_config": "Vous ne pouvez pas cocher 'Utiliser la configuration centrale' car aucune configuration centrale n'a été trouvée. Vous devez créer un Versatile Thermostat de type 'Central Configuration' pour pouvoir l'utiliser.",
-      "service_configuration_format": "Mauvais format de la configuration du service"
+      "service_configuration_format": "Mauvais format de la configuration du service",
+      "valve_regulation_nb_entities_incorrect": "Le nombre d'entités pour la régulation par vanne doit être égal au nombre d'entité sous-jacentes"
    },
    "abort": {
      "already_configured": "Le device est déjà configuré"
@@ -513,7 +500,8 @@
        "auto_regulation_medium": "Moyenne",
        "auto_regulation_light": "Légère",
        "auto_regulation_expert": "Expert",
-        "auto_regulation_none": "Aucune"
+        "auto_regulation_none": "Aucune",
+        "auto_regulation_valve": "Contrôle direct de la vanne"
      }
    },
    "auto_fan_mode": {
@@ -540,6 +528,14 @@
        "comfort": "Confort",
        "boost": "Renforcé (boost)"
      }
+    },
+    "auto_start_stop": {
+      "options": {
+        "auto_start_stop_none": "No auto start/stop",
+        "auto_start_stop_slow": "Slow detection",
+        "auto_start_stop_medium": "Medium detection",
+        "auto_start_stop_fast": "Fast detection"
+      }
    }
  },
  "entity": {
@@ -550,11 +546,59 @@
            "state": {
              "power": "Délestage",
              "security": "Sécurité",
-              "none": "Manuel"
+              "none": "Manuel",
+              "frost": "Hors Gel"
            }
          }
        }
      }
+    },
+    "number": {
+      "frost_temp": {
+        "name": "Hors gel "
+      },
+      "eco_temp": {
+        "name": "Eco"
+      },
+      "comfort_temp": {
+        "name": "Confort"
+      },
+      "boost_temp": {
+        "name": "Boost"
+      },
+      "frost_ac_temp": {
+        "name": "Hors gel clim"
+      },
+      "eco_ac_temp": {
+        "name": "Eco clim"
+      },
+      "comfort_ac_temp": {
+        "name": "Confort clim"
+      },
+      "boost_ac_temp": {
+        "name": "Boost clim"
+      },
+      "frost_away_temp": {
+        "name": "Hors gel abs"
+      },
+      "eco_away_temp": {
+        "name": "Eco abs"
+      },
+      "comfort_away_temp": {
+        "name": "Confort abs"
+      },
+      "boost_away_temp": {
+        "name": "Boost abs"
+      },
+      "eco_ac_away_temp": {
+        "name": "Eco clim abs"
+      },
+      "comfort_ac_away_temp": {
+        "name": "Confort clim abs"
+      },
+      "boost_ac_away_temp": {
+        "name": "Boost clim abs"
+      }
    }
  }
 }
--- a/custom_components/versatile_thermostat/translations/it.json
+++ b/custom_components/versatile_thermostat/translations/it.json
@@ -42,7 +42,7 @@
          "valve_entity4_id": "Quarta valvola",
          "auto_regulation_mode": "Autoregolamentazione",
          "inverse_switch_command": "Comando inverso",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
          "heater_entity_id": "Entity id obbligatoria del primo riscaldatore",
@@ -62,7 +62,7 @@
          "valve_entity4_id": "Entity id della quarta valvola",
          "auto_regulation_mode": "Regolazione automatica della temperatura target",
          "inverse_switch_command": "Inverte il controllo dell'interruttore per un'installazione con filo pilota e diodo",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -206,7 +206,7 @@
          "valve_entity4_id": "Quarta valvola",
          "auto_regulation_mode": "Autoregolamentazione",
          "inverse_switch_command": "Comando inverso",
-          "auto_fan_mode": " Auto fan mode"
+          "auto_fan_mode": "Auto fan mode"
        },
        "data_description": {
          "heater_entity_id": "Entity id obbligatoria del primo riscaldatore",
@@ -226,7 +226,7 @@
          "valve_entity4_id": "Entity id della quarta valvola",
          "auto_regulation_mode": "Autoregolamentazione",
          "inverse_switch_command": "Inverte il controllo dell'interruttore per un'installazione con filo pilota e diodo",
-          "auto_fan_mode": " Automatically activate fan when huge heating/cooling is necessary"
+          "auto_fan_mode": "Automatically activate fan when huge heating/cooling is necessary"
        }
      },
      "tpi": {
@@ -364,7 +364,8 @@
            "state": {
              "power": "Ripartizione",
              "security": "Sicurezza",
-              "none": "Manuale"
+              "none": "Manuale",
+              "frost": "Gelo"
            }
          }
        }
--- a/custom_components/versatile_thermostat/translations/sk.json
+++ b/custom_components/versatile_thermostat/translations/sk.json
@@ -12,6 +12,25 @@
          "thermostat_type": "Len jeden centrálny typ konfigurácie je možný"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Nakonfigurujte si termostat. Po zadaní všetkých požadovaných parametrov budete môcť dokončiť konfiguráciu.",
+        "menu_options": {
+          "main": "Hlavné atribúty",
+          "central_boiler": "Centrálny kotol",
+          "type": "Podklady",
+          "tpi": "TPI parametre",
+          "features": "Vlastnosti",
+          "presets": "Predvoľby",
+          "window": "Detekcia okien",
+          "motion": "Detekcia pohybu",
+          "power": "Správa napájania",
+          "presence": "Detekcia prítomnosti",
+          "advanced": "Pokročilé parametre",
+          "finalize": "Všetko hotové",
+          "configuration_not_complete": "Konfigurácia nie je dokončená"
+        }
+      },
      "main": {
        "title": "Pridajte nový všestranný termostat",
        "description": "Hlavné povinné atribúty",
@@ -19,22 +38,32 @@
          "name": "Názov",
          "thermostat_type": "Termostat typ",
          "temperature_sensor_entity_id": "ID entity snímača teploty",
+          "last_seen_temperature_sensor_entity_id": "Dátum posledného zobrazenia izbovej teploty",
          "external_temperature_sensor_entity_id": "ID entity externého snímača teploty",
          "cycle_min": "Trvanie cyklu (minúty)",
          "temp_min": "Minimálna povolená teplota",
          "temp_max": "Maximálna povolená teplota",
+          "step_temperature": "Krok teploty",
          "device_power": "Napájanie zariadenia",
          "use_central_mode": "Povoliť ovládanie centrálnou entitou (potrebná centrálna konfigurácia)",
+          "use_main_central_config": "Použite dodatočnú centrálnu hlavnú konfiguráciu. Začiarknite, ak chcete použiť centrálnu hlavnú konfiguráciu (vonkajšia teplota, min, max, krok, ...).",
+          "used_by_controls_central_boiler": "Používa sa centrálnym kotlom. Skontrolujte, či má mať tento VTherm ovládanie na centrálnom kotli"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "ID entity snímača izbovej teploty",
+          "last_seen_temperature_sensor_entity_id": "Naposledy videný snímač izbovej teploty ID entity. Mal by to byť snímač dátumu a času",
+          "external_temperature_sensor_entity_id": "ID entity snímača vonkajšej teploty. Nepoužíva sa, ak je zvolená centrálna konfigurácia"
+        }
+      },
+      "features": {
+        "title": "Vlastnosti",
+        "description": "Vlastnosti termostatu",
+        "data": {
          "use_window_feature": "Použite detekciu okien",
          "use_motion_feature": "Použite detekciu pohybu",
          "use_power_feature": "Použite správu napájania",
          "use_presence_feature": "Použite detekciu prítomnosti",
-          "use_main_central_config": "Použite centrálnu hlavnú konfiguráciu"
-        },
-        "data_description": {
-          "use_central_mode": "Zaškrtnutím povolíte ovládanie VTherm pomocou vybraných entít central_mode",
-          "use_main_central_config": "Začiarknite, ak chcete použiť centrálnu hlavnú konfiguráciu. Zrušte začiarknutie, ak chcete použiť špecifickú hlavnú konfiguráciu pre tento VTherm",
-          "external_temperature_sensor_entity_id": "ID entity snímača vonkajšej teploty. Nepoužíva sa, ak je zvolená centrálna konfigurácia"
+          "use_central_boiler_feature": "Použite centrálny kotol. Začiarknutím tohto políčka pridáte ovládanie do centrálneho kotla. Po zaškrtnutí tohto políčka budete musieť nakonfigurovať VTherm, ktorý bude mať ovládanie centrálneho kotla, aby sa prejavilo. Ak jeden VTherm vyžaduje ohrev, kotol sa zapne. Ak žiadny VTherm nevyžaduje ohrev, kotol sa vypne. Príkazy na zapnutie/vypnutie centrálneho kotla sú uvedené na príslušnej konfiguračnej stránke"
        }
      },
      "type": {
@@ -45,6 +74,7 @@
          "heater_entity2_id": "2. spínač ohrievača",
          "heater_entity3_id": "3. spínač ohrievača",
          "heater_entity4_id": "4. spínač ohrievača",
+          "heater_keep_alive": "Prepnite interval udržiavania v sekundách",
          "proportional_function": "Algoritmus",
          "climate_entity_id": "1. základná klíma",
          "climate_entity2_id": "2. základná klíma",
@@ -58,6 +88,7 @@
          "auto_regulation_mode": "Samoregulácia",
          "auto_regulation_dtemp": "Regulačný prah",
          "auto_regulation_periode_min": "Regulačné minimálne obdobie",
+          "auto_regulation_use_device_temp": "Použite vnútornú teplotu podkladu",
          "inverse_switch_command": "Inverzný prepínací príkaz",
          "auto_fan_mode": "Režim automatického ventilátora"
        },
@@ -66,6 +97,7 @@
          "heater_entity2_id": "Voliteľné ID entity 2. ohrievača. Ak sa nepoužíva, nechajte prázdne",
          "heater_entity3_id": "Voliteľné ID entity 3. ohrievača. Ak sa nepoužíva, nechajte prázdne",
          "heater_entity4_id": "Voliteľné ID entity 4. ohrievača. Ak sa nepoužíva, nechajte prázdne",
+          "heater_keep_alive": "Voliteľný interval obnovy stavu spínača ohrievača. Ak to nie je potrebné, nechajte prázdne.",
          "proportional_function": "Algoritmus, ktorý sa má použiť (TPI je zatiaľ jediný)",
          "climate_entity_id": "ID základnej klimatickej entity",
          "climate_entity2_id": "2. základné identifikačné číslo klimatickej entity",
@@ -79,6 +111,7 @@
          "auto_regulation_mode": "Automatické nastavenie cieľovej teploty",
          "auto_regulation_dtemp": "Hranica v °, pod ktorou sa zmena teploty neodošle",
          "auto_regulation_periode_min": "Trvanie v minútach medzi dvoma aktualizáciami predpisov",
+          "auto_regulation_use_device_temp": "Na urýchlenie samoregulácie použite prípadný vnútorný snímač teploty podkladu",
          "inverse_switch_command": "V prípade spínača s pilotným vodičom a diódou možno budete musieť príkaz invertovať",
          "auto_fan_mode": "Automaticky aktivujte ventilátor, keď je potrebné veľké vykurovanie/chladenie"
        }
@@ -101,24 +134,7 @@
        "title": "Predvoľby",
        "description": "Pre každú predvoľbu zadajte cieľovú teplotu (0, ak chcete predvoľbu ignorovať)",
        "data": {
-          "eco_temp": "Teplota v predvoľbe Eco",
-          "comfort_temp": "Prednastavená teplota v komfortnom režime",
-          "boost_temp": "Teplota v prednastavení Boost",
-          "frost_temp": "Teplota v prednastavení Frost protection",
-          "eco_ac_temp": "Teplota v režime Eco prednastavená pre režim AC",
-          "comfort_ac_temp": "Teplota v režime Comfort je prednastavená pre režim AC",
-          "boost_ac_temp": "Prednastavená teplota v režime Boost pre režim AC",
          "use_presets_central_config": "Použite konfiguráciu centrálnych predvolieb"
-        },
-        "data_description": {
-          "eco_temp": "Teplota v predvoľbe Eco",
-          "comfort_temp": "Prednastavená teplota v komfortnom režime",
-          "boost_temp": "Teplota v prednastavení Boost",
-          "frost_temp": "Teplota v prednastavenej ochrane proti mrazu",
-          "eco_ac_temp": "Teplota v režime Eco prednastavená pre režim AC",
-          "comfort_ac_temp": "Teplota v režime Comfort je prednastavená pre režim AC",
-          "boost_ac_temp": "Prednastavená teplota v režime Boost pre režim AC",
-          "use_presets_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálnych predvolieb. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu predvolieb pre tento VTherm"
        }
      },
      "window": {
@@ -130,7 +146,8 @@
          "window_auto_open_threshold": "Prah poklesu teploty pre automatickú detekciu otvoreného okna (v °/hodina)",
          "window_auto_close_threshold": "Prahová hodnota zvýšenia teploty pre koniec automatickej detekcie (v °/hodina)",
          "window_auto_max_duration": "Maximálne trvanie automatickej detekcie otvoreného okna (v min)",
-          "use_window_central_config": "Použite centrálnu konfiguráciu okna"
+          "use_window_central_config": "Použite centrálnu konfiguráciu okna",
+          "window_action": "Akcia"
        },
        "data_description": {
          "window_sensor_entity_id": "Nechajte prázdne, ak nemáte použiť žiadny okenný senzor",
@@ -138,7 +155,8 @@
          "window_auto_open_threshold": "Odporúčaná hodnota: medzi 3 a 10. Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
          "window_auto_close_threshold": "Odporúčaná hodnota: 0. Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
          "window_auto_max_duration": "Odporúčaná hodnota: 60 (jedna hodina). Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
-          "use_window_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálneho okna. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu okna pre tento VTherm"
+          "use_window_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálneho okna. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu okna pre tento VTherm",
+          "window_action": "Akcia, ktorá sa má vykonať, ak sa okno zistí ako otvorené"
        }
      },
      "motion": {
@@ -181,26 +199,11 @@
        "title": "Riadenie prítomnosti",
        "description": "Atribúty správy prítomnosti.\nPoskytuje senzor prítomnosti vášho domova (pravda, ak je niekto prítomný).\nPotom zadajte buď predvoľbu, ktorá sa má použiť, keď je senzor prítomnosti nepravdivý, alebo posun teploty, ktorý sa má použiť.\nAk je zadaná predvoľba, posun sa nepoužije.\nAk sa nepoužije, ponechajte zodpovedajúce entity_id prázdne.",
        "data": {
-          "presence_sensor_entity_id": "ID entity senzora prítomnosti",
-          "eco_away_temp": "Teplota v prednastavenej Eco, keď nie je žiadna prítomnosť",
-          "comfort_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný",
-          "boost_away_temp": "Prednastavená teplota v režime Boost, keď nie je prítomný",
-          "frost_away_temp": "Prednastavená teplota v režime Frost protection, keď nie je prítomný",
-          "eco_ac_away_temp": "Teplota v prednastavenej Eco, keď nie je prítomná v režime AC",
-          "comfort_ac_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný v režime AC",
-          "boost_ac_away_temp": "Teplota v prednastavenom Boost, keď nie je prítomný v režime AC",
-          "use_presence_central_config": "Použite centrálnu konfiguráciu prítomnosti"
+          "presence_sensor_entity_id": "Senzora prítomnosti",
+          "use_presence_central_config": "Použite konfiguráciu centrálnej prítomnosti teploty. Ak chcete použiť špecifické teplotné entity, zrušte výber"
        },
        "data_description": {
-          "presence_sensor_entity_id": "ID entity senzora prítomnosti",
-          "eco_away_temp": "Teplota v prednastavenej Eco, keď nie je žiadna prítomnosť",
-          "comfort_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný",
-          "boost_away_temp": "Prednastavená teplota v režime Boost, keď nie je prítomný",
-          "frost_away_temp": "Teplota v Prednastavená ochrana pred mrazom, keď nie je prítomný",
-          "eco_ac_away_temp": "Teplota v prednastavenej Eco, keď nie je prítomná v režime AC",
-          "comfort_ac_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný v režime AC",
-          "boost_ac_away_temp": "Teplota v prednastavenom Boost, keď nie je prítomný v režime AC",
-          "use_presence_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálnej prítomnosti. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu prítomnosti pre tento VTherm"
+          "presence_sensor_entity_id": "ID entity senzora prítomnosti"
        }
      },
      "advanced": {
@@ -244,6 +247,25 @@
          "thermostat_type": "Je možný len jeden centrálny typ konfigurácie"
        }
      },
+      "menu": {
+        "title": "Menu",
+        "description": "Nakonfigurujte si termostat. Po zadaní všetkých požadovaných parametrov budete môcť dokončiť konfiguráciu.",
+        "menu_options": {
+          "main": "Hlavné atribúty",
+          "central_boiler": "Centrálny kotol",
+          "type": "Podklady",
+          "tpi": "TPI parametre",
+          "features": "Vlastnosti",
+          "presets": "Predvoľby",
+          "window": "Detekcia okien",
+          "motion": "Detekcia pohybu",
+          "power": "Správa napájania",
+          "presence": "Detekcia prítomnosti",
+          "advanced": "Pokročilé parametre",
+          "finalize": "Všetko hotové",
+          "configuration_not_complete": "Konfigurácia nie je dokončená"
+        }
+      },
      "main": {
        "title": "Hlavný - {name}",
        "description": "Hlavné povinné atribúty",
@@ -251,22 +273,32 @@
          "name": "Názov",
          "thermostat_type": "Termostat typ",
          "temperature_sensor_entity_id": "ID entity snímača teploty",
+          "last_seen_temperature_sensor_entity_id": "Dátum posledného zobrazenia izbovej teploty",
          "external_temperature_sensor_entity_id": "ID entity externého snímača teploty",
          "cycle_min": "Trvanie cyklu (minúty)",
          "temp_min": "Minimálna povolená teplota",
          "temp_max": "Maximálna povolená teplota",
+          "step_temperature": "Krok teploty",
          "device_power": "Výkon zariadenia (kW)",
-          "use_central_mode": "Povoliť ovládanie centrálnou entitou (potrebná centrálna konfigurácia)",
+          "use_central_mode": "Povoliť ovládanie centrálnou entitou (vyžaduje centrálnu konfiguráciu). Zaškrtnutím povolíte ovládanie VTherm pomocou vybraných entít central_mode.",
+          "use_main_central_config": "Použite dodatočnú centrálnu hlavnú konfiguráciu. Začiarknite, ak chcete použiť centrálnu hlavnú konfiguráciu (vonkajšia teplota, min, max, krok, ...).",
+          "used_by_controls_central_boiler": "Používa sa centrálnym kotlom. Skontrolujte, či má mať tento VTherm ovládanie na centrálnom kotli"
+        },
+        "data_description": {
+          "temperature_sensor_entity_id": "ID entity snímača izbovej teploty",
+          "last_seen_temperature_sensor_entity_id": "Naposledy videný snímač izbovej teploty ID entity. Mal by to byť snímač dátumu a času",
+          "external_temperature_sensor_entity_id": "ID entity snímača vonkajšej teploty. Nepoužíva sa, ak je zvolená centrálna konfigurácia"
+        }
+      },
+      "features": {
+        "title": "Vlastnosti - {name}",
+        "description": "Vlastnosti termostatu",
+        "data": {
          "use_window_feature": "Použite detekciu okien",
          "use_motion_feature": "Použite detekciu pohybu",
          "use_power_feature": "Použite správu napájania",
          "use_presence_feature": "Použite detekciu prítomnosti",
-          "use_main_central_config": "Použite centrálnu hlavnú konfiguráciu"
-        },
-        "data_description": {
-          "use_central_mode": "Zaškrtnutím povolíte ovládanie VTherm pomocou vybraných entít central_mode",
-          "use_main_central_config": "Začiarknite, ak chcete použiť centrálnu hlavnú konfiguráciu. Ak chcete použiť špecifickú konfiguráciu pre tento VTherm, zrušte začiarknutie",
-          "external_temperature_sensor_entity_id": "ID entity snímača vonkajšej teploty. Nepoužíva sa, ak je zvolená centrálna konfigurácia"
+          "use_central_boiler_feature": "Použite centrálny kotol. Začiarknutím tohto políčka pridáte ovládanie do centrálneho kotla. Po zaškrtnutí tohto políčka budete musieť nakonfigurovať VTherm, ktorý bude mať ovládanie centrálneho kotla, aby sa prejavilo. Ak jeden VTherm vyžaduje ohrev, kotol sa zapne. Ak žiadny VTherm nevyžaduje ohrev, kotol sa vypne. Príkazy na zapnutie/vypnutie centrálneho kotla sú uvedené na príslušnej konfiguračnej stránke"
        }
      },
      "type": {
@@ -277,6 +309,7 @@
          "heater_entity2_id": "2. spínač ohrievača",
          "heater_entity3_id": "3. spínač ohrievača",
          "heater_entity4_id": "4. spínač ohrievača",
+          "heater_keep_alive": "Prepnite interval udržiavania v sekundách",
          "proportional_function": "Algoritmus",
          "climate_entity_id": "Základná klíma",
          "climate_entity2_id": "2. základná klíma",
@@ -290,6 +323,7 @@
          "auto_regulation_mode": "Samoregulácia",
          "auto_regulation_dtemp": "Regulačný prah",
          "auto_regulation_periode_min": "Regulačné minimálne obdobie",
+          "auto_regulation_use_device_temp": "Použite vnútornú teplotu podkladu",
          "inverse_switch_command": "Inverzný prepínací príkaz",
          "auto_fan_mode": "Režim automatického ventilátora"
        },
@@ -298,6 +332,7 @@
          "heater_entity2_id": "Voliteľné ID entity 2. ohrievača. Ak sa nepoužíva, nechajte prázdne",
          "heater_entity3_id": "Voliteľné ID entity 3. ohrievača. Ak sa nepoužíva, nechajte prázdne",
          "heater_entity4_id": "Voliteľné ID entity 4. ohrievača. Ak sa nepoužíva, nechajte prázdne",
+          "heater_keep_alive": "Voliteľný interval obnovy stavu spínača ohrievača. Ak to nie je potrebné, nechajte prázdne.",
          "proportional_function": "Algoritmus, ktorý sa má použiť (TPI je zatiaľ jediný)",
          "climate_entity_id": "ID základnej klimatickej entity",
          "climate_entity2_id": "2. základný identifikátor klimatickej entity",
@@ -311,6 +346,7 @@
          "auto_regulation_mode": "Automatické nastavenie cieľovej teploty",
          "auto_regulation_dtemp": "Hranica v °, pod ktorou sa zmena teploty neodošle",
          "auto_regulation_periode_min": "Trvanie v minútach medzi dvoma aktualizáciami predpisov",
+          "auto_regulation_use_device_temp": "Na urýchlenie samoregulácie použite prípadný vnútorný snímač teploty podkladu",
          "inverse_switch_command": "V prípade spínača s pilotným vodičom a diódou možno budete musieť príkaz invertovať",
          "auto_fan_mode": "Automaticky aktivujte ventilátor, keď je potrebné veľké vykurovanie/chladenie"
        }
@@ -333,24 +369,7 @@
        "title": "Predvoľby - {name}",
        "description": "Pre každú predvoľbu zadajte cieľovú teplotu (0, ak chcete predvoľbu ignorovať)",
        "data": {
-          "eco_temp": "Teplota v predvoľbe Eco",
-          "comfort_temp": "Prednastavená teplota v komfortnom režime",
-          "boost_temp": "Teplota v prednastavení Boost",
-          "frost_temp": "Teplota v prednastavení Frost protection",
-          "eco_ac_temp": "Teplota v režime Eco prednastavená pre režim AC",
-          "comfort_ac_temp": "Teplota v režime Comfort je prednastavená pre režim AC",
-          "boost_ac_temp": "Prednastavená teplota v režime Boost pre režim AC",
          "use_presets_central_config": "Použite konfiguráciu centrálnych predvolieb"
-        },
-        "data_description": {
-          "eco_temp": "Teplota v predvoľbe Eco",
-          "comfort_temp": "Prednastavená teplota v komfortnom režime",
-          "boost_temp": "Teplota v prednastavení Boost",
-          "frost_temp": "Teplota v prednastavenej ochrane proti mrazu",
-          "eco_ac_temp": "Teplota v režime Eco prednastavená pre režim AC",
-          "comfort_ac_temp": "Teplota v režime Comfort je prednastavená pre režim AC",
-          "boost_ac_temp": "Prednastavená teplota v režime Boost pre režim AC",
-          "use_presets_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálnych predvolieb. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu predvolieb pre tento VTherm"
        }
      },
      "window": {
@@ -362,7 +381,8 @@
          "window_auto_open_threshold": "Prah poklesu teploty pre automatickú detekciu otvoreného okna (v °/hodina)",
          "window_auto_close_threshold": "Prahová hodnota zvýšenia teploty pre koniec automatickej detekcie (v °/hodina)",
          "window_auto_max_duration": "Maximálne trvanie automatickej detekcie otvoreného okna (v min)",
-          "use_window_central_config": "Použite centrálnu konfiguráciu okna"
+          "use_window_central_config": "Použite centrálnu konfiguráciu okna",
+          "window_action": "Akcia"
        },
        "data_description": {
          "window_sensor_entity_id": "Nechajte prázdne, ak nemáte použiť žiadny okenný senzor",
@@ -370,7 +390,8 @@
          "window_auto_open_threshold": "Odporúčaná hodnota: medzi 3 a 10. Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
          "window_auto_close_threshold": "Odporúčaná hodnota: 0. Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
          "window_auto_max_duration": "Odporúčaná hodnota: 60 (jedna hodina). Ak sa nepoužíva automatická detekcia otvoreného okna, nechajte prázdne",
-          "use_window_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálneho okna. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu okna pre tento VTherm"
+          "use_window_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálneho okna. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu okna pre tento VTherm",
+          "window_action": "Akcia, ktorá sa má vykonať, ak sa okno zistí ako otvorené"
        }
      },
      "motion": {
@@ -410,29 +431,14 @@
        }
      },
      "presence": {
-        "title": "Riadenie prítomnosti",
-        "description": "Atribúty správy prítomnosti.\nPoskytuje senzor prítomnosti vášho domova (pravda, ak je niekto prítomný).\nPotom zadajte buď predvoľbu, ktorá sa má použiť, keď je senzor prítomnosti nepravdivý, alebo posun teploty, ktorý sa má použiť.\nAk je zadaná predvoľba, posun sa nepoužije.\nAk sa nepoužije, ponechajte zodpovedajúce entity_id prázdne.",
+        "title": "Prítommnosť - {name}",
+        "description": "Atribúty riadenia prítomnosti.\nPoskytuje senzor prítomnosti vášho domova (pravda, je niekto prítomný) a poskytuje zodpovedajúce prednastavené nastavenie teploty.",
        "data": {
-          "presence_sensor_entity_id": "ID entity senzora prítomnosti (pravda je prítomná)",
-          "eco_away_temp": "Teplota v prednastavenej Eco, keď nie je žiadna prítomnosť",
-          "comfort_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný",
-          "boost_away_temp": "Prednastavená teplota v režime Boost, keď nie je prítomný",
-          "frost_away_temp": "Prednastavená teplota v režime Frost protection, keď nie je prítomný",
-          "eco_ac_away_temp": "Teplota v prednastavenej Eco, keď nie je prítomná v režime AC",
-          "comfort_ac_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný v režime AC",
-          "boost_ac_away_temp": "Teplota v prednastavenom Boost, keď nie je prítomný v režime AC",
-          "use_presence_central_config": "Použite centrálnu konfiguráciu prítomnosti"
+          "presence_sensor_entity_id": "Senzor prítomnosti",
+          "use_presence_central_config": "Použite konfiguráciu centrálnej prítomnosti teploty. Ak chcete použiť špecifické entity teploty, zrušte začiarknutie"
        },
        "data_description": {
-          "presence_sensor_entity_id": "ID entity senzora prítomnosti",
-          "eco_away_temp": "Teplota v prednastavenej Eco, keď nie je žiadna prítomnosť",
-          "comfort_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný",
-          "boost_away_temp": "Prednastavená teplota v režime Boost, keď nie je prítomný",
-          "frost_away_temp": "Teplota v Prednastavená ochrana pred mrazom, keď nie je prítomný",
-          "eco_ac_away_temp": "Teplota v prednastavenej Eco, keď nie je prítomná v režime AC",
-          "comfort_ac_away_temp": "Teplota v režime Comfort je prednastavená, keď nie je prítomný v režime AC",
-          "boost_ac_away_temp": "Teplota v prednastavenom Boost, keď nie je prítomný v režime AC",
-          "use_presence_central_config": "Začiarknite, ak chcete použiť konfiguráciu centrálnej prítomnosti. Zrušte začiarknutie, ak chcete použiť špecifickú konfiguráciu prítomnosti pre tento VTherm"
+          "presence_sensor_entity_id": "ID entity senzora prítomnosti"
        }
      },
      "advanced": {
@@ -458,7 +464,8 @@
      "unknown": "Neočakávaná chyba",
      "unknown_entity": "Neznáme ID entity",
      "window_open_detection_method": "Mala by sa použiť iba jedna metóda detekcie otvoreného okna. Použite senzor alebo automatickú detekciu cez teplotný prah, ale nie oboje",
-      "no_central_config": "Nemôžete zaškrtnúť „použiť centrálnu konfiguráciu“, pretože sa nenašla žiadna centrálna konfigurácia. Aby ste ho mohli používať, musíte si vytvoriť všestranný termostat typu „Central Configuration“."
+      "no_central_config": "Nemôžete zaškrtnúť „použiť centrálnu konfiguráciu“, pretože sa nenašla žiadna centrálna konfigurácia. Aby ste ho mohli používať, musíte si vytvoriť všestranný termostat typu „Central Configuration“.",
+      "service_configuration_format": "Formát konfigurácie služby je nesprávny"
    },
    "abort": {
      "already_configured": "Zariadenie je už nakonfigurované"
@@ -491,6 +498,22 @@
        "auto_fan_high": "Vysoký",
        "auto_fan_turbo": "Turbo"
      }
+    },
+    "window_action": {
+      "options": {
+        "window_turn_off": "Vypnúť",
+        "window_fan_only": "Len ventilátor",
+        "window_frost_temp": "Ochrana pred mrazom",
+        "window_eco_temp": "Eco"
+      }
+    },
+    "presets": {
+      "options": {
+        "frost": "Ochrana proti mrazu",
+        "eco": "Eco",
+        "comfort": "Komfort",
+        "boost": "Boost"
+      }
    }
  },
  "entity": {
@@ -506,6 +529,53 @@
          }
        }
      }
+    },
+    "number": {
+      "frost_temp": {
+        "name": "Mráz"
+      },
+      "eco_temp": {
+        "name": "Eco"
+      },
+      "comfort_temp": {
+        "name": "Komfort"
+      },
+      "boost_temp": {
+        "name": "Boost"
+      },
+      "frost_ac_temp": {
+        "name": "Mráz ac"
+      },
+      "eco_ac_temp": {
+        "name": "Eco ac"
+      },
+      "comfort_ac_temp": {
+        "name": "Komfort ac"
+      },
+      "boost_ac_temp": {
+        "name": "Boost ac"
+      },
+      "frost_away_temp": {
+        "name": "Mráz mimo"
+      },
+      "eco_away_temp": {
+        "name": "Eko mimo"
+      },
+      "comfort_away_temp": {
+        "name": "Komfort mimo"
+      },
+      "boost_away_temp": {
+        "name": "Boost mimo"
+      },
+      "eco_ac_away_temp": {
+        "name": "Eco ac mimo"
+      },
+      "comfort_ac_away_temp": {
+        "name": "Komfort ac mimo"
+      },
+      "boost_ac_away_temp": {
+        "name": "Boost ac mimo"
+      }
    }
  }
 }
--- a/custom_components/versatile_thermostat/underlyings.py
+++ b/custom_components/versatile_thermostat/underlyings.py
@@ -1,11 +1,11 @@
-# pylint: disable=unused-argument, line-too-long
+# pylint: disable=unused-argument, line-too-long, too-many-lines

 """ Underlying entities classes """
 import logging
 from typing import Any
 from enum import StrEnum

-from homeassistant.const import ATTR_ENTITY_ID, STATE_ON, UnitOfTemperature
+from homeassistant.const import ATTR_ENTITY_ID, STATE_ON, STATE_UNAVAILABLE
 from homeassistant.core import State

 from homeassistant.exceptions import ServiceNotFound
@@ -30,8 +30,9 @@ from homeassistant.components.number import SERVICE_SET_VALUE

 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.event import async_call_later
+from homeassistant.util.unit_conversion import TemperatureConverter

-from .const import UnknownEntity, overrides
+from .const import UnknownEntity, overrides, get_safe_float
 from .keep_alive import IntervalCaller

 _LOGGER = logging.getLogger(__name__)
@@ -52,6 +53,9 @@ class UnderlyingEntityType(StrEnum):
    # a valve
    VALVE = "valve"

+    # a direct valve regulation
+    VALVE_REGULATION = "valve_regulation"
+

 class UnderlyingEntity:
    """Represent a underlying device which could be a switch or a climate"""
@@ -61,6 +65,7 @@ class UnderlyingEntity:
    _thermostat: Any
    _entity_id: str
    _type: UnderlyingEntityType
+    _hvac_mode: HVACMode | None

    def __init__(
        self,
@@ -74,6 +79,7 @@ class UnderlyingEntity:
        self._thermostat = thermostat
        self._type = entity_type
        self._entity_id = entity_id
+        self._hvac_mode = None

    def __str__(self):
        return str(self._thermostat) + "-" + self._entity_id
@@ -99,13 +105,24 @@ class UnderlyingEntity:

    async def set_hvac_mode(self, hvac_mode: HVACMode):
        """Set the HVACmode"""
+        self._hvac_mode = hvac_mode
        return

+    @property
+    def hvac_mode(self) -> HVACMode | None:
+        """Return the current hvac_mode"""
+        return self._hvac_mode
+
    @property
    def is_device_active(self) -> bool | None:
        """If the toggleable device is currently active."""
        return None

+    @property
+    def hvac_action(self) -> HVACAction:
+        """Calculate a hvac_action"""
+        return HVACAction.HEATING if self.is_device_active is True else HVACAction.OFF
+
    async def set_temperature(self, temperature, max_temp, min_temp):
        """Set the target temperature"""
        return
@@ -180,7 +197,6 @@ class UnderlyingSwitch(UnderlyingEntity):
    _initialDelaySec: int
    _on_time_sec: int
    _off_time_sec: int
-    _hvac_mode: HVACMode

    def __init__(
        self,
@@ -188,7 +204,7 @@ class UnderlyingSwitch(UnderlyingEntity):
        thermostat: Any,
        switch_entity_id: str,
        initial_delay_sec: int,
-        keep_alive_sec: int,
+        keep_alive_sec: float,
    ) -> None:
        """Initialize the underlying switch"""

@@ -203,7 +219,6 @@ class UnderlyingSwitch(UnderlyingEntity):
        self._should_relaunch_control_heating = False
        self._on_time_sec = 0
        self._off_time_sec = 0
-        self._hvac_mode = None
        self._keep_alive = IntervalCaller(hass, keep_alive_sec)

    @property
@@ -217,12 +232,15 @@ class UnderlyingSwitch(UnderlyingEntity):
        """Tells if the switch command should be inversed"""
        return self._thermostat.is_inversed

+    @property
+    def keep_alive_sec(self) -> float:
+        """Return the switch keep-alive interval in seconds."""
+        return self._keep_alive.interval_sec
+
    @overrides
    def startup(self):
        super().startup()
-        self._keep_alive.set_async_action(
-            self.turn_on if self.is_device_active else self.turn_off
-        )
+        self._keep_alive.set_async_action(self._keep_alive_callback)

    # @overrides this breaks some unit tests TypeError: object MagicMock can't be used in 'await' expression
    async def set_hvac_mode(self, hvac_mode: HVACMode) -> bool:
@@ -233,8 +251,8 @@ class UnderlyingSwitch(UnderlyingEntity):
                await self.turn_off()
            self._cancel_cycle()

-        if self._hvac_mode != hvac_mode:
-            self._hvac_mode = hvac_mode
+        if self.hvac_mode != hvac_mode:
+            super().set_hvac_mode(hvac_mode)
            return True
        else:
            return False
@@ -247,9 +265,35 @@ class UnderlyingSwitch(UnderlyingEntity):
            not self.is_inversed and real_state
        )

+    async def _keep_alive_callback(self):
+        """Keep alive: Turn on if already turned on, turn off if already turned off."""
+        timer = self._keep_alive.backoff_timer
+        state: State | None = self._hass.states.get(self._entity_id)
+        # Normal, expected state.state values are "on" and "off". An absent
+        # underlying MQTT switch was observed to produce either state == None
+        # or state.state == STATE_UNAVAILABLE ("unavailable").
+        if state is None or state.state == STATE_UNAVAILABLE:
+            if timer.is_ready():
+                _LOGGER.warning(
+                    "Entity %s is not available (state: %s). Will keep trying "
+                    "keep alive calls, but won't log this condition every time.",
+                    self._entity_id,
+                    state.state if state else "None",
+                )
+        else:
+            if timer.in_progress:
+                timer.reset()
+                _LOGGER.warning(
+                    "Entity %s has recovered (state: %s).",
+                    self._entity_id,
+                    state.state,
+                )
+            await (self.turn_on() if self.is_device_active else self.turn_off())
+
    # @overrides this breaks some unit tests TypeError: object MagicMock can't be used in 'await' expression
    async def turn_off(self):
        """Turn heater toggleable device off."""
+        self._keep_alive.cancel()  # Cancel early to avoid a turn_on/turn_off race condition
        _LOGGER.debug("%s - Stopping underlying entity %s", self, self._entity_id)
        command = SERVICE_TURN_OFF if not self.is_inversed else SERVICE_TURN_ON
        domain = self._entity_id.split(".")[0]
@@ -258,7 +302,7 @@ class UnderlyingSwitch(UnderlyingEntity):
            try:
                data = {ATTR_ENTITY_ID: self._entity_id}
                await self._hass.services.async_call(domain, command, data)
-                self._keep_alive.set_async_action(self.turn_off)
+                self._keep_alive.set_async_action(self._keep_alive_callback)
            except Exception:
                self._keep_alive.cancel()
                raise
@@ -267,6 +311,7 @@ class UnderlyingSwitch(UnderlyingEntity):

    async def turn_on(self):
        """Turn heater toggleable device on."""
+        self._keep_alive.cancel()  # Cancel early to avoid a turn_on/turn_off race condition
        _LOGGER.debug("%s - Starting underlying entity %s", self, self._entity_id)
        command = SERVICE_TURN_ON if not self.is_inversed else SERVICE_TURN_OFF
        domain = self._entity_id.split(".")[0]
@@ -274,7 +319,7 @@ class UnderlyingSwitch(UnderlyingEntity):
            try:
                data = {ATTR_ENTITY_ID: self._entity_id}
                await self._hass.services.async_call(domain, command, data)
-                self._keep_alive.set_async_action(self.turn_on)
+                self._keep_alive.set_async_action(self._keep_alive_callback)
            except Exception:
                self._keep_alive.cancel()
                raise
@@ -457,6 +502,7 @@ class UnderlyingClimate(UnderlyingEntity):
            entity_id=climate_entity_id,
        )
        self._underlying_climate = None
+        self._last_sent_temperature = None

    def find_underlying_climate(self) -> ClimateEntity:
        """Find the underlying climate entity"""
@@ -477,8 +523,8 @@ class UnderlyingClimate(UnderlyingEntity):
                self._underlying_climate,
            )
        else:
-            _LOGGER.error(
-                "%s - Cannot find the underlying climate entity: %s. Thermostat will not be operational",
+            _LOGGER.info(
+                "%s - Cannot find the underlying climate entity: %s. Thermostat will not be operational. Will try later.",
                self,
                self.entity_id,
            )
@@ -518,14 +564,11 @@ class UnderlyingClimate(UnderlyingEntity):
    def is_device_active(self):
        """If the toggleable device is currently active."""
        if self.is_initialized:
-            return (
-                self._underlying_climate.hvac_mode != HVACMode.OFF
-                and self._underlying_climate.hvac_action
-                not in [
-                    HVACAction.IDLE,
-                    HVACAction.OFF,
-                ]
-            )
+            return self.hvac_mode != HVACMode.OFF and self.hvac_action not in [
+                HVACAction.IDLE,
+                HVACAction.OFF,
+                None,
+            ]
        else:
            return None

@@ -581,12 +624,24 @@ class UnderlyingClimate(UnderlyingEntity):
        if not self.is_initialized:
            return

-        data = {
-            ATTR_ENTITY_ID: self._entity_id,
-            "temperature": self.cap_sent_value(temperature),
-            "target_temp_high": max_temp,
-            "target_temp_low": min_temp,
-        }
+        # Issue 508 we have to take care of service set_temperature or set_range
+        target_temp = self.cap_sent_value(temperature)
+        if (
+            ClimateEntityFeature.TARGET_TEMPERATURE_RANGE
+            in self._underlying_climate.supported_features
+        ):
+            data = {
+                ATTR_ENTITY_ID: self._entity_id,
+                "target_temp_high": target_temp,
+                "target_temp_low": target_temp,
+                # issue 518 - we should send also the target temperature, even in TARGET RANGE
+                "temperature": target_temp,
+            }
+        else:
+            data = {
+                ATTR_ENTITY_ID: self._entity_id,
+                "temperature": target_temp,
+            }

        await self._hass.services.async_call(
            CLIMATE_DOMAIN,
@@ -594,12 +649,48 @@ class UnderlyingClimate(UnderlyingEntity):
            data,
        )

+        self._last_sent_temperature = target_temp
+
+    @property
+    def last_sent_temperature(self) -> float | None:
+        """Get the last send temperature. None if no temperature have been sent yet"""
+        return self._last_sent_temperature
+
    @property
    def hvac_action(self) -> HVACAction | None:
        """Get the hvac action of the underlying"""
        if not self.is_initialized:
            return None
-        return self._underlying_climate.hvac_action
+
+        hvac_action = self._underlying_climate.hvac_action
+        if hvac_action is None:
+            target = (
+                self.underlying_target_temperature
+                or self._thermostat.target_temperature
+            )
+            current = (
+                self.underlying_current_temperature
+                or self._thermostat.current_temperature
+            )
+            hvac_mode = self.hvac_mode
+
+            _LOGGER.debug(
+                "%s - hvac_action simulation target=%s, current=%s, hvac_mode=%s",
+                self,
+                target,
+                current,
+                hvac_mode,
+            )
+            hvac_action = HVACAction.IDLE
+            if target is not None and current is not None:
+                dtemp = target - current
+
+                if hvac_mode == HVACMode.COOL and dtemp < 0:
+                    hvac_action = HVACAction.COOLING
+                elif hvac_mode in [HVACMode.HEAT, HVACMode.HEAT_COOL] and dtemp > 0:
+                    hvac_action = HVACAction.HEATING
+
+        return hvac_action

    @property
    def hvac_mode(self) -> HVACMode | None:
@@ -636,6 +727,13 @@ class UnderlyingClimate(UnderlyingEntity):
            return []
        return self._underlying_climate.hvac_modes

+    @property
+    def current_humidity(self) -> float | None:
+        """Get the humidity"""
+        if not self.is_initialized:
+            return None
+        return self._underlying_climate.current_humidity
+
    @property
    def fan_modes(self) -> list[str]:
        """Get the fan_modes"""
@@ -654,7 +752,7 @@ class UnderlyingClimate(UnderlyingEntity):
    def temperature_unit(self) -> str:
        """Get the temperature_unit"""
        if not self.is_initialized:
-            return UnitOfTemperature.CELSIUS
+            return self._hass.config.units.temperature_unit
        return self._underlying_climate.temperature_unit

    @property
@@ -679,11 +777,19 @@ class UnderlyingClimate(UnderlyingEntity):
        return self._underlying_climate.target_temperature_low

    @property
-    def is_aux_heat(self) -> bool:
-        """Get the is_aux_heat"""
+    def underlying_target_temperature(self) -> float:
+        """Get the target_temperature"""
        if not self.is_initialized:
-            return False
-        return self._underlying_climate.is_aux_heat
+            return None
+
+        if not hasattr(self._underlying_climate, "target_temperature"):
+            return None
+        else:
+            return self._underlying_climate.target_temperature
+
+        # return self._hass.states.get(self._entity_id).attributes.get(
+        #    "target_temperature"
+        # )

    @property
    def underlying_current_temperature(self) -> float | None:
@@ -694,8 +800,17 @@ class UnderlyingClimate(UnderlyingEntity):

        if not hasattr(self._underlying_climate, "current_temperature"):
            return None
+        else:
+            return self._underlying_climate.current_temperature

-        return self._underlying_climate.current_temperature
+        # return self._hass.states.get(self._entity_id).attributes.get("current_temperature")
+
+    @property
+    def is_aux_heat(self) -> bool:
+        """Get the is_aux_heat"""
+        if not self.is_initialized:
+            return False
+        return self._underlying_climate.is_aux_heat

    def turn_aux_heat_on(self) -> None:
        """Turn auxiliary heater on."""
@@ -722,8 +837,12 @@ class UnderlyingClimate(UnderlyingEntity):
            self._underlying_climate.min_temp is not None
            and self._underlying_climate is not None
        ):
-            min_val = self._underlying_climate.min_temp
-            max_val = self._underlying_climate.max_temp
+            min_val = TemperatureConverter.convert(
+                self._underlying_climate.min_temp, self._underlying_climate.temperature_unit, self._hass.config.units.temperature_unit
+            )
+            max_val = TemperatureConverter.convert(
+                self._underlying_climate.max_temp, self._underlying_climate.temperature_unit, self._hass.config.units.temperature_unit
+            )

            new_value = max(min_val, min(value, max_val))
        else:
@@ -749,11 +868,16 @@ class UnderlyingValve(UnderlyingEntity):
    _hvac_mode: HVACMode
    # This is the percentage of opening int integer (from 0 to 100)
    _percent_open: int
+    _last_sent_temperature = None

    def __init__(
-        self, hass: HomeAssistant, thermostat: Any, valve_entity_id: str
+        self,
+        hass: HomeAssistant,
+        thermostat: Any,
+        valve_entity_id: str,
+        entity_type: UnderlyingEntityType = UnderlyingEntityType.VALVE,
    ) -> None:
-        """Initialize the underlying switch"""
+        """Initialize the underlying valve"""

        super().__init__(
            hass=hass,
@@ -764,22 +888,30 @@ class UnderlyingValve(UnderlyingEntity):
        self._async_cancel_cycle = None
        self._should_relaunch_control_heating = False
        self._hvac_mode = None
-        self._percent_open = self._thermostat.valve_open_percent
+        self._percent_open = None  # self._thermostat.valve_open_percent
        self._valve_entity_id = valve_entity_id

+    async def _send_value_to_number(self, number_entity_id: str, value: int):
+        """Send a value to a number entity"""
+        try:
+            data = {"value": value}
+            target = {ATTR_ENTITY_ID: number_entity_id}
+            domain = number_entity_id.split(".")[0]
+            await self._hass.services.async_call(
+                domain=domain,
+                service=SERVICE_SET_VALUE,
+                service_data=data,
+                target=target,
+            )
+        except ServiceNotFound as err:
+            _LOGGER.error(err)
+            # This could happens in unit test if input_number domain is not yet loaded
+            # raise err
+
    async def send_percent_open(self):
        """Send the percent open to the underlying valve"""
        # This may fails if called after shutdown
-        try:
-            data = {ATTR_ENTITY_ID: self._entity_id, "value": self._percent_open}
-            domain = self._entity_id.split(".")[0]
-            await self._hass.services.async_call(
-                domain,
-                SERVICE_SET_VALUE,
-                data,
-            )
-        except ServiceNotFound as err:
-            _LOGGER.error(err)
+        return await self._send_value_to_number(self._entity_id, self._percent_open)

    async def turn_off(self):
        """Turn heater toggleable device off."""
@@ -792,7 +924,7 @@ class UnderlyingValve(UnderlyingEntity):

    async def turn_on(self):
        """Nothing to do for Valve because it cannot be turned on"""
-        self.set_valve_open_percent()
+        await self.set_valve_open_percent()

    async def set_hvac_mode(self, hvac_mode: HVACMode) -> bool:
        """Set the HVACmode. Returns true if something have change"""
@@ -830,9 +962,8 @@ class UnderlyingValve(UnderlyingEntity):
        force=False,
    ):
        """We use this function to change the on_percent"""
-        if force:
-            self._percent_open = self.cap_sent_value(self._percent_open)
-            await self.send_percent_open()
+        # if force:
+        await self.set_valve_open_percent()

    @overrides
    def cap_sent_value(self, value) -> float:
@@ -848,7 +979,7 @@ class UnderlyingValve(UnderlyingEntity):
            min_val = valve_state.attributes["min"]
            max_val = valve_state.attributes["max"]

-            new_value = round(max(min_val, min(value, max_val)))
+            new_value = round(max(min_val, min(value / 100 * max_val, max_val)))
        else:
            _LOGGER.debug("%s - no min and max attributes on underlying", self)
            new_value = value
@@ -865,7 +996,7 @@ class UnderlyingValve(UnderlyingEntity):

        return new_value

-    def set_valve_open_percent(self):
+    async def set_valve_open_percent(self):
        """Update the valve open percent"""
        caped_val = self.cap_sent_value(self._thermostat.valve_open_percent)
        if self._percent_open == caped_val:
@@ -879,8 +1010,181 @@ class UnderlyingValve(UnderlyingEntity):
            "%s - Setting valve ouverture percent to %s", self, self._percent_open
        )
        # Send the change to the valve, in background
-        self._hass.create_task(self.send_percent_open())
+        # self._hass.create_task(self.send_percent_open())
+        await self.send_percent_open()

    def remove_entity(self):
        """Remove the entity after stopping its cycle"""
        self._cancel_cycle()
+
+
+class UnderlyingValveRegulation(UnderlyingValve):
+    """A specific underlying class for Valve regulation"""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        thermostat: Any,
+        offset_calibration_entity_id: str,
+        opening_degree_entity_id: str,
+        closing_degree_entity_id: str,
+        climate_underlying: UnderlyingClimate,
+    ) -> None:
+        """Initialize the underlying TRV with valve regulation"""
+        super().__init__(
+            hass,
+            thermostat,
+            opening_degree_entity_id,
+            entity_type=UnderlyingEntityType.VALVE_REGULATION,
+        )
+        self._offset_calibration_entity_id: str = offset_calibration_entity_id
+        self._opening_degree_entity_id: str = opening_degree_entity_id
+        self._closing_degree_entity_id: str = closing_degree_entity_id
+        self._climate_underlying = climate_underlying
+        self._is_min_max_initialized: bool = False
+        self._max_opening_degree: float = None
+        self._min_offset_calibration: float = None
+        self._max_offset_calibration: float = None
+
+    async def send_percent_open(self):
+        """Send the percent open to the underlying valve"""
+        if not self._is_min_max_initialized:
+            _LOGGER.debug(
+                "%s - initialize min offset_calibration and max open_degree", self
+            )
+            self._max_opening_degree = self._hass.states.get(
+                self._opening_degree_entity_id
+            ).attributes.get("max")
+
+            if self.have_offset_calibration_entity:
+                self._min_offset_calibration = self._hass.states.get(
+                    self._offset_calibration_entity_id
+                ).attributes.get("min")
+                self._max_offset_calibration = self._hass.states.get(
+                    self._offset_calibration_entity_id
+                ).attributes.get("max")
+
+            self._is_min_max_initialized = self._max_opening_degree is not None and (
+                not self.have_offset_calibration_entity
+                or (
+                    self._min_offset_calibration is not None
+                    and self._max_offset_calibration is not None
+                )
+            )
+
+        if not self._is_min_max_initialized:
+            _LOGGER.warning(
+                "%s - impossible to initialize max_opening_degree or min_offset_calibration. Abort sending percent open to the valve. This could be a temporary message at startup."
+            )
+            return
+
+        # Send opening_degree
+        await super().send_percent_open()
+
+        # Send closing_degree if set
+        closing_degree = None
+        if self.have_closing_degree_entity:
+            await self._send_value_to_number(
+                self._closing_degree_entity_id,
+                closing_degree := self._max_opening_degree - self._percent_open,
+            )
+
+        # send offset_calibration to the difference between target temp and local temp
+        offset = None
+        if self.have_offset_calibration_entity:
+            if (
+                (local_temp := self._climate_underlying.underlying_current_temperature)
+                is not None
+                and (room_temp := self._thermostat.current_temperature) is not None
+                and (
+                    current_offset := get_safe_float(
+                        self._hass, self._offset_calibration_entity_id
+                    )
+                )
+                is not None
+            ):
+                offset = min(
+                    self._max_offset_calibration,
+                    max(
+                        self._min_offset_calibration,
+                        room_temp - (local_temp - current_offset),
+                    ),
+                )
+
+                await self._send_value_to_number(
+                    self._offset_calibration_entity_id, offset
+                )
+
+        _LOGGER.debug(
+            "%s - valve regulation - I have sent offset_calibration=%s opening_degree=%s closing_degree=%s",
+            self,
+            offset,
+            self._percent_open,
+            closing_degree,
+        )
+
+    @property
+    def offset_calibration_entity_id(self) -> str:
+        """The offset_calibration_entity_id"""
+        return self._offset_calibration_entity_id
+
+    @property
+    def opening_degree_entity_id(self) -> str:
+        """The offset_calibration_entity_id"""
+        return self._opening_degree_entity_id
+
+    @property
+    def closing_degree_entity_id(self) -> str:
+        """The offset_calibration_entity_id"""
+        return self._closing_degree_entity_id
+
+    @property
+    def have_closing_degree_entity(self) -> bool:
+        """Return True if the underlying have a closing_degree entity"""
+        return self._closing_degree_entity_id is not None
+
+    @property
+    def have_offset_calibration_entity(self) -> bool:
+        """Return True if the underlying have a offset_calibration entity"""
+        return self._offset_calibration_entity_id is not None
+
+    @property
+    def hvac_modes(self) -> list[HVACMode]:
+        """Get the hvac_modes"""
+        if not self.is_initialized:
+            return []
+        return [HVACMode.OFF, HVACMode.HEAT]
+
+    @overrides
+    async def start_cycle(
+        self,
+        hvac_mode: HVACMode,
+        _1,
+        _2,
+        _3,
+        force=False,
+    ):
+        """We use this function to change the on_percent"""
+        # if force:
+        await self.set_valve_open_percent()
+
+    @property
+    def is_device_active(self):
+        """If the opening valve is open."""
+        try:
+            return get_safe_float(self._hass, self._opening_degree_entity_id) > 0
+        except Exception:  # pylint: disable=broad-exception-caught
+            return False
+
+    @property
+    def valve_entity_ids(self) -> [str]:
+        """get an arrary with all entityd id of the valve"""
+        ret = []
+        for entity in [
+            self.opening_degree_entity_id,
+            self.closing_degree_entity_id,
+            self.offset_calibration_entity_id,
+        ]:
+            if entity:
+                ret.append(entity)
+        return ret
--- a/custom_components/versatile_thermostat/vtherm_api.py
+++ b/custom_components/versatile_thermostat/vtherm_api.py
@@ -1,8 +1,13 @@
 """ The API of Versatile Thermostat"""
+
 import logging
 from homeassistant.core import HomeAssistant
 from homeassistant.config_entries import ConfigEntry

+from homeassistant.helpers.entity_component import EntityComponent
+from homeassistant.components.climate import ClimateEntity, DOMAIN as CLIMATE_DOMAIN
+from homeassistant.components.number import NumberEntity
+
 from .const import (
    DOMAIN,
    CONF_AUTO_REGULATION_EXPERT,
@@ -10,6 +15,7 @@ from .const import (
    CONF_SAFETY_MODE,
    CONF_THERMOSTAT_TYPE,
    CONF_THERMOSTAT_CENTRAL_CONFIG,
+    CONF_MAX_ON_PERCENT,
 )

 VTHERM_API_NAME = "vtherm_api"
@@ -51,19 +57,26 @@ class VersatileThermostatAPI(dict):
        self._central_boiler_entity = None
        self._threshold_number_entity = None
        self._nb_active_number_entity = None
+        self._central_configuration = None
+        self._central_mode_select = None
+        # A dict that will store all Number entities which holds the temperature
+        self._number_temperatures = dict()
+        self._max_on_percent = None

    def find_central_configuration(self):
        """Search for a central configuration"""
-        for config_entry in VersatileThermostatAPI._hass.config_entries.async_entries(
-            DOMAIN
-        ):
-            if (
-                config_entry.data.get(CONF_THERMOSTAT_TYPE)
-                == CONF_THERMOSTAT_CENTRAL_CONFIG
-            ):
-                central_config = config_entry
-                return central_config
-        return None
+        if not self._central_configuration:
+            for (
+                config_entry
+            ) in VersatileThermostatAPI._hass.config_entries.async_entries(DOMAIN):
+                if (
+                    config_entry.data.get(CONF_THERMOSTAT_TYPE)
+                    == CONF_THERMOSTAT_CENTRAL_CONFIG
+                ):
+                    self._central_configuration = config_entry
+                    break
+                    # return self._central_configuration
+        return self._central_configuration

    def add_entry(self, entry: ConfigEntry):
        """Add a new entry"""
@@ -96,6 +109,12 @@ class VersatileThermostatAPI(dict):
        if self._safety_mode:
            _LOGGER.debug("We have found safet_mode params %s", self._safety_mode)

+        self._max_on_percent = config.get(CONF_MAX_ON_PERCENT)
+        if self._max_on_percent:
+            _LOGGER.debug(
+                "We have found max_on_percent setting %s", self._max_on_percent
+            )
+
    def register_central_boiler(self, central_boiler_entity):
        """Register the central boiler entity. This is used by the CentralBoilerBinarySensor
        class to register itself at creation"""
@@ -106,16 +125,116 @@ class VersatileThermostatAPI(dict):
    ):
        """register the two number entities needed for boiler activation"""
        self._threshold_number_entity = threshold_number_entity
+        # If sensor and threshold number are initialized, reload the listener
+        # if self._nb_active_number_entity and self._central_boiler_entity:
+        #     self._hass.async_add_job(self.reload_central_boiler_binary_listener)

    def register_nb_device_active_boiler(self, nb_active_number_entity):
        """register the two number entities needed for boiler activation"""
        self._nb_active_number_entity = nb_active_number_entity
+        # if self._threshold_number_entity and self._central_boiler_entity:
+        #     self._hass.async_add_job(self.reload_central_boiler_binary_listener)
+
+    def register_temperature_number(
+        self,
+        config_id: str,
+        preset_name: str,
+        number_entity: NumberEntity,
+    ):
+        """Register the NumberEntity for a particular device / preset."""
+        # Search for device_name into the _number_temperatures dict
+        if not self._number_temperatures.get(config_id):
+            self._number_temperatures[config_id] = dict()
+
+        self._number_temperatures.get(config_id)[preset_name] = number_entity
+
+    def get_temperature_number_value(self, config_id, preset_name) -> float | None:
+        """Returns the value of a previously registred NumberEntity which represent
+        a temperature. If no NumberEntity was previously registred, then returns None"""
+        entities = self._number_temperatures.get(config_id, None)
+        if entities:
+            entity = entities.get(preset_name, None)
+            if entity:
+                return entity.state
+        return None
+
+    async def init_vtherm_links(self, entry_id=None):
+        """Initialize all VTherms entities links
+        This method is called when HA is fully started (and all entities should be initialized)
+        Or when we need to reload all VTherm links (with Number temp entities, central boiler, ...)
+        If entry_id is set, only the VTherm of this entry will be reloaded
+        """
+        await self.reload_central_boiler_binary_listener()
+        await self.reload_central_boiler_entities_list()
+        # Initialization of all preset for all VTherm
+        component: EntityComponent[ClimateEntity] = self._hass.data.get(
+            CLIMATE_DOMAIN, None
+        )
+        if component:
+            for entity in component.entities:
+                # if hasattr(entity, "init_presets"):
+                #     if (
+                #         only_use_central is False
+                #         or entity.use_central_config_temperature
+                #     ):
+                #         await entity.init_presets(self.find_central_configuration())
+
+                # A little hack to test if the climate is a VTherm. Cannot use isinstance
+                # due to circular dependency of BaseThermostat
+                if (
+                    entity.device_info
+                    and entity.device_info.get("model", None) == DOMAIN
+                ):
+                    if entry_id is None or entry_id == entity.unique_id:
+                        await entity.async_startup(self.find_central_configuration())
+
+    async def init_vtherm_preset_with_central(self):
+        """Init all VTherm presets when the VTherm uses central temperature"""
+        # Initialization of all preset for all VTherm
+        component: EntityComponent[ClimateEntity] = self._hass.data.get(
+            CLIMATE_DOMAIN, None
+        )
+        if component:
+            for entity in component.entities:
+                if (
+                    entity.device_info
+                    and entity.device_info.get("model", None) == DOMAIN
+                    and entity.use_central_config_temperature
+                ):
+                    await entity.init_presets(self.find_central_configuration())
+
+    async def reload_central_boiler_binary_listener(self):
+        """Reloads the BinarySensor entity which listen to the number of
+        active devices and the thresholds entities"""
+        if self._central_boiler_entity:
+            await self._central_boiler_entity.listen_nb_active_vtherm_entity()

    async def reload_central_boiler_entities_list(self):
        """Reload the central boiler list of entities if a central boiler is used"""
        if self._nb_active_number_entity is not None:
            await self._nb_active_number_entity.listen_vtherms_entities()

+    def register_central_mode_select(self, central_mode_select):
+        """Register the select entity which holds the central_mode"""
+        self._central_mode_select = central_mode_select
+
+    async def notify_central_mode_change(self, old_central_mode: str | None = None):
+        """Notify all VTherm that the central_mode have change"""
+        if self._central_mode_select is None:
+            return
+
+        # Update all VTherm states
+        component: EntityComponent[ClimateEntity] = self.hass.data[CLIMATE_DOMAIN]
+        for entity in component.entities:
+            if entity.device_info and entity.device_info.get("model", None) == DOMAIN:
+                _LOGGER.debug(
+                    "Changing the central_mode. We have find %s to update",
+                    entity.name,
+                )
+                await entity.check_central_mode(
+                    self._central_mode_select.state, old_central_mode
+                )
+
    @property
    def self_regulation_expert(self):
        """Get the self regulation params"""
@@ -131,6 +250,11 @@ class VersatileThermostatAPI(dict):
        """Get the safety_mode params"""
        return self._safety_mode

+    @property
+    def max_on_percent(self):
+        """Get the max_open_percent params"""
+        return self._max_on_percent
+
    @property
    def central_boiler_entity(self):
        """Get the central boiler binary_sensor entity"""
@@ -165,6 +289,14 @@ class VersatileThermostatAPI(dict):
            return None
        return int(self._threshold_number_entity.native_value)

+    @property
+    def central_mode(self) -> str | None:
+        """Get the current central mode or None"""
+        if self._central_mode_select:
+            return self._central_mode_select.state
+        else:
+            return None
+
    @property
    def hass(self):
        """Get the HomeAssistant object"""
--- a/documentation/en/additions.md
+++ b/documentation/en/additions.md
@@ -0,0 +1,211 @@
+# Some Essential Add-Ons
+
+- [Some Essential Add-Ons](#some-essential-add-ons)
+  - [the Versatile Thermostat UI Card](#the-versatile-thermostat-ui-card)
+  - [the Scheduler Component!](#the-scheduler-component)
+  - [Regulation curves with Plotly to Fine-Tune Your Thermostat](#regulation-curves-with-plotly-to-fine-tune-your-thermostat)
+  - [Event notification with the AppDaemon NOTIFIER](#event-notification-with-the-appdaemon-notifier)
+
+## the Versatile Thermostat UI Card
+A dedicated card for the Versatile Thermostat has been developed (based on Better Thermostat). It is available here: [Versatile Thermostat UI Card](https://github.com/jmcollin78/versatile-thermostat-ui-card) and offers a modern view of all the VTherm statuses:
+
+![image](https://github.com/jmcollin78/versatile-thermostat-ui-card/blob/master/assets/1.png?raw=true)
+
+## the Scheduler Component!
+
+To make the most out of the Versatile Thermostat, I recommend using it with the [Scheduler Component](https://github.com/nielsfaber/scheduler-component). The scheduler component provides climate scheduling based on predefined modes. While this feature is somewhat limited with the generic thermostat, it becomes very powerful when paired with the Versatile Thermostat.
+
+Assuming you have installed both the Versatile Thermostat and the Scheduler Component, here’s an example:
+
+In Scheduler, add a schedule:
+
+![image](https://user-images.githubusercontent.com/1717155/119146454-ee1a9d80-ba4a-11eb-80ae-3074c3511830.png)
+
+Choose the "Climate" group, select one (or more) entity, pick "MAKE SCHEME," and click next:
+(You can also choose "SET PRESET," but I prefer "MAKE SCHEME.")
+
+![image](https://user-images.githubusercontent.com/1717155/119147210-aa746380-ba4b-11eb-8def-479a741c0ba7.png)
+
+Define your mode scheme and save:
+
+![image](https://user-images.githubusercontent.com/1717155/119147784-2f5f7d00-ba4c-11eb-9de4-5e62ff5e71a8.png)
+
+In this example, I set ECO mode during the night and when no one is home during the day, BOOST in the morning, and COMFORT in the evening.
+
+I hope this example helps; feel free to share your feedback!
+
+## Regulation curves with Plotly to Fine-Tune Your Thermostat
+You can obtain a curve similar to the one shown in [some results](#some-results) using a Plotly graph configuration by leveraging the thermostat's custom attributes described [here](#custom-attributes):
+
+Replace the values between `[[ ]]` with your own.
+<details>
+
+```yaml
+- type: custom:plotly-graph
+  entities:
+    - entity: '[[climate]]'
+      attribute: temperature
+      yaxis: y1
+      name: Consigne
+    - entity: '[[climate]]'
+      attribute: current_temperature
+      yaxis: y1
+      name: T°
+    - entity: '[[climate]]'
+      attribute: ema_temp
+      yaxis: y1
+      name: Ema
+    - entity: '[[climate]]'
+      attribute: on_percent
+      yaxis: y2
+      name: Power percent
+      fill: tozeroy
+      fillcolor: rgba(200, 10, 10, 0.3)
+      line:
+        color: rgba(200, 10, 10, 0.9)
+    - entity: '[[slope]]'
+      name: Slope
+      fill: tozeroy
+      yaxis: y9
+      fillcolor: rgba(100, 100, 100, 0.3)
+      line:
+        color: rgba(100, 100, 100, 0.9)
+  hours_to_show: 4
+  refresh_interval: 10
+  height: 800
+  config:
+    scrollZoom: true
+  layout:
+    margin:
+      r: 50
+    legend:
+      x: 0
+      'y': 1.2
+      groupclick: togglegroup
+      title:
+        side: top right
+    yaxis:
+      visible: true
+      position: 0
+    yaxis2:
+      visible: true
+      position: 0
+      fixedrange: true
+      range:
+        - 0
+        - 1
+    yaxis9:
+      visible: true
+      fixedrange: false
+      range:
+        - -2
+        - 2
+      position: 1
+    xaxis:
+      rangeselector:
+        'y': 1.1
+        x: 0.7
+        buttons:
+          - count: 1
+            step: hour
+          - count: 12
+            step: hour
+          - count: 1
+            step: day
+          - count: 7
+            step: day
+```
+</details>
+
+Example of curves obtained with Plotly:
+
+![image](images/plotly-curves.png)
+
+## Event notification with the AppDaemon NOTIFIER
+This automation leverages the excellent AppDaemon app named NOTIFIER, developed by Horizon Domotique, demonstrated [here](https://www.youtube.com/watch?v=chJylIK0ASo&ab_channel=HorizonDomotique), and the code is available [here](https://github.com/jlpouffier/home-assistant-config/blob/master/appdaemon/apps/notifier.py). It allows users to be notified of security-related events occurring on any Versatile Thermostat.
+
+This is a great example of using the notifications described here: [notification](#notifications).
+<details>
+
+```yaml
+alias: Surveillance Mode Sécurité chauffage
+description: Envoi une notification si un thermostat passe en mode sécurité ou power
+trigger:
+  - platform: event
+    event_type: versatile_thermostat_security_event
+    id: versatile_thermostat_security_event
+  - platform: event
+    event_type: versatile_thermostat_power_event
+    id: versatile_thermostat_power_event
+  - platform: event
+    event_type: versatile_thermostat_temperature_event
+    id: versatile_thermostat_temperature_event
+condition: []
+action:
+  - choose:
+      - conditions:
+          - condition: trigger
+            id: versatile_thermostat_security_event
+        sequence:
+          - event: NOTIFIER
+            event_data:
+              action: send_to_jmc
+              title: >-
+                Radiateur {{ trigger.event.data.name }} - {{
+                trigger.event.data.type }} Sécurité
+              message: >-
+                Le radiateur {{ trigger.event.data.name }} est passé en {{
+                trigger.event.data.type }} sécurité car le thermomètre ne répond
+                plus.\n{{ trigger.event.data }}
+              callback:
+                - title: Stopper chauffage
+                  event: stopper_chauffage
+              image_url: /media/local/alerte-securite.jpg
+              click_url: /lovelace-chauffage/4
+              icon: mdi:radiator-off
+              tag: radiateur_security_alerte
+              persistent: true
+      - conditions:
+          - condition: trigger
+            id: versatile_thermostat_power_event
+        sequence:
+          - event: NOTIFIER
+            event_data:
+              action: send_to_jmc
+              title: >-
+                Radiateur {{ trigger.event.data.name }} - {{
+                trigger.event.data.type }} Délestage
+              message: >-
+                Le radiateur {{ trigger.event.data.name }} est passé en {{
+                trigger.event.data.type }} délestage car la puissance max est
+                dépassée.\n{{ trigger.event.data }}
+              callback:
+                - title: Stopper chauffage
+                  event: stopper_chauffage
+              image_url: /media/local/alerte-delestage.jpg
+              click_url: /lovelace-chauffage/4
+              icon: mdi:radiator-off
+              tag: radiateur_power_alerte
+              persistent: true
+      - conditions:
+          - condition: trigger
+            id: versatile_thermostat_temperature_event
+        sequence:
+          - event: NOTIFIER
+            event_data:
+              action: send_to_jmc
+              title: >-
+                Le thermomètre du radiateur {{ trigger.event.data.name }} ne
+                répond plus
+              message: >-
+                Le thermomètre du radiateur {{ trigger.event.data.name }} ne
+                répond plus depuis longtemps.\n{{ trigger.event.data }}
+              image_url: /media/local/thermometre-alerte.jpg
+              click_url: /lovelace-chauffage/4
+              icon: mdi:radiator-disabled
+              tag: radiateur_thermometre_alerte
+              persistent: true
+mode: queued
+max: 30
+```
+</details>
--- a/documentation/en/algorithms.md
+++ b/documentation/en/algorithms.md
@@ -0,0 +1,67 @@
+# The Different Algorithms Used
+
+- [The Different Algorithms Used](#the-different-algorithms-used)
+  - [The TPI Algorithm](#the-tpi-algorithm)
+    - [Configuring the TPI Algorithm Coefficients](#configuring-the-tpi-algorithm-coefficients)
+    - [Principle](#principle)
+  - [The Self-Regulation Algorithm (Without Valve Control)](#the-self-regulation-algorithm-without-valve-control)
+  - [The Auto-Start/Stop Function Algorithm](#the-auto-startstop-function-algorithm)
+
+## The TPI Algorithm
+
+### Configuring the TPI Algorithm Coefficients
+
+If you have selected a thermostat of type `over_switch`, `over_valve`, or `over_climate` with self-regulation in `Direct Valve Control` mode and choose the "TPI" option in the menu, you will land on this page:
+
+![image](images/config-tpi.png)
+
+You need to provide:
+1. the coefficient `coef_int` for the TPI algorithm,
+2. the coefficient `coef_ext` for the TPI algorithm.
+
+### Principle
+
+The TPI algorithm calculates the On vs Off percentage for the radiator at each cycle, using the target temperature, the current room temperature, and the current outdoor temperature. This algorithm is only applicable for Versatile Thermostats operating in `over_switch` and `over_valve` modes.
+
+The percentage is calculated using this formula:
+
+    on_percent = coef_int * (target_temperature - current_temperature) + coef_ext * (target_temperature - outdoor_temperature)
+    Then, the algorithm ensures that 0 <= on_percent <= 1.
+
+The default values for `coef_int` and `coef_ext` are `0.6` and `0.01`, respectively. These default values are suitable for a standard well-insulated room.
+
+When adjusting these coefficients, keep the following in mind:
+1. **If the target temperature is not reached** after stabilization, increase `coef_ext` (the `on_percent` is too low),
+2. **If the target temperature is exceeded** after stabilization, decrease `coef_ext` (the `on_percent` is too high),
+3. **If reaching the target temperature is too slow**, increase `coef_int` to provide more power to the heater,
+4. **If reaching the target temperature is too fast and oscillations occur** around the target, decrease `coef_int` to provide less power to the radiator.
+
+In `over_valve` mode, the `on_percent` value is converted to a percentage (0 to 100%) and directly controls the valve's opening level.
+
+## The Self-Regulation Algorithm (Without Valve Control)
+
+The self-regulation algorithm can be summarized as follows:
+
+1. Initialize the target temperature as the VTherm setpoint,
+2. If self-regulation is enabled:
+   1. Calculate the regulated temperature (valid for a VTherm),
+   2. Use this temperature as the target,
+3. For each underlying device of the VTherm:
+     1. If "Use Internal Temperature" is checked:
+          1. Calculate the compensation (`trv_internal_temp - room_temp`),
+     2. Add the offset to the target temperature,
+     3. Send the target temperature (= regulated_temp + (internal_temp - room_temp)) to the underlying device.
+
+## The Auto-Start/Stop Function Algorithm
+
+The algorithm used in the auto-start/stop function operates as follows:
+1. If "Enable Auto-Start/Stop" is off, stop here.
+2. If VTherm is on and in Heating mode, when `error_accumulated` < `-error_threshold` -> turn off and save HVAC mode.
+3. If VTherm is on and in Cooling mode, when `error_accumulated` > `error_threshold` -> turn off and save HVAC mode.
+4. If VTherm is off and the saved HVAC mode is Heating, and `current_temperature + slope * dt <= target_temperature`, turn on and set the HVAC mode to the saved mode.
+5. If VTherm is off and the saved HVAC mode is Cooling, and `current_temperature + slope * dt >= target_temperature`, turn on and set the HVAC mode to the saved mode.
+6. `error_threshold` is set to `10 (° * min)` for slow detection, `5` for medium, and `2` for fast.
+
+`dt` is set to `30 min` for slow, `15 min` for medium, and `7 min` for fast detection levels.
+
+The function is detailed [here](https://github.com/jmcollin78/versatile_thermostat/issues/585).
--- a/documentation/en/base-attributes.md
+++ b/documentation/en/base-attributes.md
@@ -0,0 +1,45 @@
+- [Choosing Basic Attributes](#choosing-basic-attributes)
+- [Choosing the features to Use](#choosing-the-features-to-use)
+
+# Choosing Basic Attributes
+
+Select the "Main Attributes" menu.
+
+![image](images/config-main.png)
+
+Provide the mandatory main attributes. These attributes are common to all VTherms:
+1. A name (this will be both the integration's name and the `climate` entity name),
+2. An entity ID of a temperature sensor that provides the room temperature where the radiator is installed,
+3. An optional sensor entity providing the last seen date and time of the sensor (`last_seen`). If available, specify it here. It helps prevent safety shutdowns when the temperature is stable, and the sensor stops reporting for a long time (see [here](troubleshooting.md#why-does-my-versatile-thermostat-go-into-safety-mode)),
+4. A cycle duration in minutes. At each cycle:
+   1. For `over_switch`: VTherm will turn the radiator on/off, modulating the proportion of time it is on,
+   2. For `over_valve`: VTherm will calculate a new valve opening level and send it if it has changed,
+   3. For `over_climate`: The cycle performs basic controls and recalculates the self-regulation coefficients. The cycle may result in a new setpoint sent to underlying devices or a valve opening adjustment in the case of a controllable TRV.
+5. The equipment's power, which will activate power and energy consumption sensors for the device. If multiple devices are linked to the same VTherm, specify the total maximum power of all devices here,
+6. The option to use additional parameters from centralized configuration:
+   1. Outdoor temperature sensor,
+   2. Minimum/maximum temperature and temperature step size,
+7. The option to control the thermostat centrally. See [centralized control](#centralized-control),
+8. A checkbox if this VTherm is used to trigger a central boiler.
+
+> ![Tip](images/tips.png) _*Notes*_
+>  1. With the `over_switch` and `over_valve` types, calculations are performed at each cycle. In case of changing conditions, you will need to wait for the next cycle to see a change. For this reason, the cycle should not be too long. **5 minutes is a good value**, but it should be adjusted to your heating type. The greater the inertia, the longer the cycle should be. See [Tuning examples](tuning-examples.md).
+>  2. If the cycle is too short, the radiator may never reach the target temperature. For example, with a storage heater, it will be unnecessarily activated.
+
+# Choosing the features to Use
+
+Select the "Features" menu.
+
+![image](images/config-features.png)
+
+Choose the features you want to use for this VTherm:
+1. **Opening detection** (doors, windows) stops heating when an opening is detected. (see [managing openings](feature-window.md)),
+2. **Motion detection**: VTherm can adjust the target temperature when motion is detected in the room. (see [motion detection](feature-motion.md)),
+3. **Power management**: VTherm can stop a device if the power consumption in your home exceeds a threshold. (see [load-shedding management](feature-power.md)),
+4. **Presence detection**: If you have a sensor indicating presence or absence in your home, you can use it to change the target temperature. See [presence management](feature-presence.md). Note the difference between this function and motion detection: presence is typically used at the home level, while motion detection is more room-specific.
+5. **Automatic start/stop**: For `over_climate` VTherms only. This function stops a device when VTherm detects it will not be needed for a while. It uses the temperature curve to predict when the device will be needed again and turns it back on at that time. See [automatic start/stop management](feature-auto-start-stop.md).
+
+> ![Tip](images/tips.png) _*Notes*_
+> 1. The list of available functions adapts to your VTherm type.
+> 2. When you enable a function, a new menu entry is added to configure it.
+> 3. You cannot validate the creation of a VTherm if all parameters for all enabled functions have not been configured.
--- a/documentation/en/creation.md
+++ b/documentation/en/creation.md
@@ -0,0 +1,71 @@
+# Choosing a VTherm
+
+- [Choosing a VTherm](#choosing-a-vtherm)
+  - [Creating a New Versatile Thermostat](#creating-a-new-versatile-thermostat)
+- [Choosing a VTherm Type](#choosing-a-vtherm-type)
+  - [Centralized configuration](#centralized-configuration)
+  - [VTherm over a switch](#vtherm-over-a-switch)
+  - [VTherm over another thermostat](#vtherm-over-another-thermostat)
+  - [VTherm over a valve](#vtherm-over-a-valve)
+- [Making the right choice](#making-the-right-choice)
+- [Reference Article](#reference-article)
+
+> ![Tip](images/tips.png) _*Notes*_
+>
+> There are three ways to work with VTherms:
+> 1. Each Versatile Thermostat is fully configured independently. Choose this option if you do not want any centralized configuration or management.
+> 2. Some aspects are configured centrally. For example, you can define the minimum/maximum temperatures, open window detection parameters, etc., at a single central instance. For each VTherm you configure, you can then choose to use the central configuration or override it with custom parameters.
+> 3. In addition to centralized configuration, all VTherms can be controlled by a single `select` entity called `central_mode`. This feature allows you to stop/start/set frost protection/etc. for all VTherms at once. For each VTherm, you can specify if it is affected by this `central_mode`.
+
+## Creating a New Versatile Thermostat
+
+Click on "Add Integration" on the integration page (or click 'Add device' in the integration page)
+
+![image](images/add-an-integration.png)
+
+then:
+
+![image](images/config-main0.png)
+
+The configuration can be modified via the same interface. Simply select the thermostat to modify, press "Configure," and you will be able to change some parameters or settings.
+
+Follow the configuration steps by selecting the menu option to configure.
+
+# Choosing a VTherm Type
+
+## Centralized configuration
+This option allows you to configure certain repetitive aspects for all VTherms at once, such as:
+1. Parameters for different algorithms (TPI, open window detection, motion detection, power sensors for your home, presence detection). These parameters apply across all VTherms. You only need to enter them once in `Centralized Configuration`. This configuration does not create a VTherm itself but centralizes parameters that would be tedious to re-enter for each VTherm. Note that you can override these parameters on individual VTherms to specialize them if needed.
+2. Configuration for controlling a central heating system,
+3. Certain advanced parameters, such as safety settings.
+
+## VTherm over a switch
+This VTherm type controls a switch that turns a radiator on or off. The switch can be a physical switch directly controlling a radiator (often electric) or a virtual switch that can perform any action when turned on or off. The latter type can, for example, control pilot wire switches or DIY pilot wire solutions with diodes. VTherm modulates the proportion of time the radiator is on (`on_percent`) to achieve the desired temperature. If it is cold, it turns on more frequently (up to 100%); if it is warm, it reduces the on time.
+
+The underlying entities for this type are `switches` or `input_booleans`.
+
+## VTherm over another thermostat
+When your device is controlled by a `climate` entity in Home Assistant and you only have access to this, you should use this VTherm type. In this case, VTherm simply adjusts the target temperature of the underlying `climate` entity.
+
+This type also includes advanced self-regulation features to adjust the setpoint sent to the underlying device, helping to achieve the target temperature faster and mitigating poor internal regulation. For example, if the device's internal thermometer is too close to the heating element, it may incorrectly assume the room is warm while the setpoint is far from being achieved in other areas.
+
+Since version 6.8, this VTherm type can also regulate directly by controlling the valve. Ideal for controllable TRVs, this type is recommended if you have such devices.
+
+The underlying entities for this VTherm type are exclusively `climate`.
+
+## VTherm over a valve
+If the only entity available to regulate your radiator's temperature is a `number` entity, you should use the `over_valve` type. VTherm adjusts the valve opening based on the difference between the target temperature and the actual room temperature (and the outdoor temperature, if available).
+
+This type can be used for TRVs without an associated `climate` entity or other DIY solutions exposing a `number` entity.
+
+# Making the right choice
+> ![Tip](images/tips.png) _*How to Choose the Type*_
+> Choosing the correct type is crucial. It cannot be changed later via the configuration interface. To make the right choice, consider the following questions:
+> 1. **What type of equipment will I control?** Follow this order of preference:
+>    1. If you have a controllable thermostatic valve (TRV) in Home Assistant through a `number` entity (e.g., a Shelly TRV), choose the `over_valve` type. This is the most direct type and ensures the best regulation.
+>    2. If you have an electric radiator (with or without a pilot wire) controlled by a `switch` entity to turn it on/off, then the `over_switch` type is preferable. Regulation will be managed by the Versatile Thermostat based on the temperature measured by your thermometer at its placement location.
+>    3. In all other cases, use the `over_climate` mode. You retain your original `climate` entity, and the Versatile Thermostat "only" controls the on/off state and target temperature of your original thermostat. Regulation is handled by your original thermostat in this case. This mode is particularly suited for all-in-one reversible air conditioning systems exposed as a `climate` entity in Home Assistant. Advanced self-regulation can achieve the setpoint faster by forcing the setpoint or directly controlling the valve when possible.
+> 2. **What type of regulation do I want?** If the controlled equipment has its own built-in regulation mechanism (e.g., HVAC systems, certain TRVs) and it works well, choose `over_climate`. For TRVs with a controllable valve in Home Assistant, the `over_climate` type with `Direct Valve Control` self-regulation is the best choice.
+
+# Reference Article
+For more information on these concepts, refer to this article (in French): https://www.hacf.fr/optimisation-versatile-thermostat/#optimiser-vos-vtherm
--- a/documentation/en/feature-advanced.md
+++ b/documentation/en/feature-advanced.md
@@ -0,0 +1,53 @@
+# Advanced Configuration
+
+- [Advanced Configuration](#advanced-configuration)
+  - [Advanced Settings](#advanced-settings)
+    - [Minimum Activation Delay](#minimum-activation-delay)
+    - [Safety Mode](#safety-mode)
+
+These settings refine the thermostat's operation, particularly the safety mechanism for a _VTherm_. Missing temperature sensors (room or outdoor) can pose a risk to your home. For instance, if the temperature sensor gets stuck at 10°C, the `over_climate` or `over_valve` _VTherm_ types will command maximum heating of the underlying devices, which could lead to room overheating or even property damage, at worst resulting in a fire hazard.
+
+To prevent this, _VTherm_ ensures that thermometers report values regularly. If they don't, the _VTherm_ switches to a special mode called Safety Mode. This mode ensures minimal heating to prevent the opposite risk: a completely unheated home in the middle of winter, for example.
+
+The challenge lies in that some thermometers—especially battery-operated ones—only send temperature updates when the value changes. It is entirely possible to receive no temperature updates for hours without the thermometer failing. The parameters below allow fine-tuning of the thresholds for activating Safety Mode.
+
+If your thermometer has a `last seen` attribute indicating the last contact time, you can specify it in the _VTherm_'s main attributes to greatly reduce false Safety Mode activations. See [configuration](base-attributes.md#choosing-base-attributes) and [troubleshooting](troubleshooting.md#why-does-my-versatile-thermostat-switch-to-safety-mode).
+
+For `over_climate` _VTherms_, which self-regulate, Safety Mode is disabled. In this case, there is no danger, only the risk of an incorrect temperature.
+
+## Advanced Settings
+
+The advanced configuration form looks like this:
+
+![image](images/config-advanced.png)
+
+### Minimum Activation Delay
+
+The first delay (`minimal_activation_delay_sec`) in seconds is the minimum acceptable delay to turn on the heating. If the calculated activation time is shorter than this value, the heating remains off. This parameter only applies to _VTherm_ with cyclic triggering `over_switch`. If the activation time is too short, rapid switching will not allow the device to heat up properly.
+
+### Safety Mode
+
+The second delay (`security_delay_min`) is the maximum time between two temperature measurements before the _VTherm_ switches to Safety Mode.
+
+The third parameter (`security_min_on_percent`) is the minimum `on_percent` below which Safety Mode will not be activated. This setting prevents activating Safety Mode if the controlled radiator does not heat sufficiently. In this case, there is no physical risk to the home, only the risk of overheating or underheating.
+Setting this parameter to `0.00` will trigger Safety Mode regardless of the last heating setting, whereas `1.00` will never trigger Safety Mode (effectively disabling the feature). This can be useful to adapt the safety mechanism to your specific needs.
+
+The fourth parameter (`security_default_on_percent`) defines the `on_percent` used when the thermostat switches to `security` mode. Setting it to `0` will turn off the thermostat in Safety Mode, while setting it to a value like `0.2` (20%) ensures some heating remains, avoiding a completely frozen home in case of a thermometer failure.
+
+It is possible to disable Safety Mode triggered by missing data from the outdoor thermometer. Since the outdoor thermometer usually has a minor impact on regulation (depending on your configuration), it might not be critical if it's unavailable. To do this, add the following lines to your `configuration.yaml`:
+
+```yaml
+versatile_thermostat:
+...
+    safety_mode:
+        check_outdoor_sensor: false
+```
+
+By default, the outdoor thermometer can trigger Safety Mode if it stops sending data. Remember that Home Assistant must be restarted for these changes to take effect. This setting applies to all _VTherms_ sharing the outdoor thermometer.
+
+> ![Tip](images/tips.png) _*Notes*_
+> 1. When the temperature sensor resumes reporting, the preset will be restored to its previous value.
+> 2. Two temperature sources are required: the indoor and outdoor temperatures. Both must report values, or the thermostat will switch to "security" preset.
+> 3. An action is available to adjust the three safety parameters. This can help adapt Safety Mode to your needs.
+> 4. For normal use, `security_default_on_percent` should be lower than `security_min_on_percent`.
+> 5. If you use the Versatile Thermostat UI card (see [here](additions.md#better-with-the-versatile-thermostat-ui-card)), a _VTherm_ in Safety Mode is indicated by a gray overlay showing the faulty thermometer and the time since its last value update: ![safety mode](images/safety-mode-icon.png).
--- a/documentation/en/feature-auto-start-stop.md
+++ b/documentation/en/feature-auto-start-stop.md
@@ -0,0 +1,39 @@
+# Auto-start / Auto-stop
+
+- [Auto-start / Auto-stop](#auto-start--auto-stop)
+  - [Configure Auto-start/stop](#configure-auto-startstop)
+  - [Usage](#usage)
+
+This feature allows _VTherm_ to stop an appliance that doesn't need to be on and restart it when conditions require it. This function includes three settings that control how quickly the appliance is stopped and restarted.
+Exclusively reserved for _VTherm_ of type `over_climate`, it applies to the following use case:
+1. Your appliance is permanently powered on and consumes electricity even when heating (or cooling) is not needed. This is often the case with heat pumps (_PAC_) that consume power even in standby mode.
+2. The temperature conditions are such that heating (or cooling) is not needed for a long period: the setpoint is higher (or lower) than the room temperature.
+3. The temperature rises (or falls), remains stable, or falls (or rises) slowly.
+
+In such cases, it is preferable to ask the appliance to turn off to avoid unnecessary power consumption in standby mode.
+
+## Configure Auto-start/stop
+
+To use this feature, you need to:
+1. Add the `With auto-start and stop` function in the 'Functions' menu.
+2. Set the detection level in the 'Auto-start/stop' option that appears when the function is activated. Choose the detection level between 'Slow', 'Medium', and 'Fast'. With the 'Fast' setting, stops and restarts will occur more frequently.
+
+![image](images/config-auto-start-stop.png)
+
+The 'Slow' setting allows about 30 minutes between a stop and a restart,
+The 'Medium' setting sets the threshold to about 15 minutes, and the 'Fast' setting puts it at 7 minutes.
+
+Note that these are not absolute settings since the algorithm takes into account the slope of the room temperature curve to respond accordingly. It is still possible that a restart occurs shortly after a stop if the temperature drops significantly.
+
+## Usage
+
+Once the function is configured, you will now have a new `switch` type entity that allows you to enable or disable auto-start/stop without modifying the configuration. This entity is available on the _VTherm_ device and is named `switch.<name>_enable_auto_start_stop`.
+
+![image](images/enable-auto-start-stop-entity.png)
+
+Check the box to allow auto-start and auto-stop, and leave it unchecked to disable the feature.
+
+> ![Tip](images/tips.png) _*Notes*_
+> 1. The detection algorithm is described [here](algorithms.md#auto-startstop-algorithm).
+> 2. Some appliances (boilers, underfloor heating, _PAC_, etc.) may not like being started/stopped too frequently. If that's the case, it might be better to disable the function when you know the appliance will be used. For example, I disable this feature during the day when presence is detected because I know my _PAC_ will turn on often. I enable auto-start/stop at night or when no one is home, as the setpoint is lowered and it rarely triggers.
+> 3. If you use the Versatile Thermostat UI card (see [here](additions.md#better-with-the-versatile-thermostat-ui-card)), a checkbox is directly visible on the card to disable auto-start/stop, and a _VTherm_ stopped by auto-start/stop is indicated by the icon: ![auto-start/stop icon](images/auto-start-stop-icon.png).
--- a/documentation/en/feature-central-boiler.md
+++ b/documentation/en/feature-central-boiler.md
@@ -0,0 +1,123 @@
+# Le contrôle d'une chaudière centrale# Controlling a Central Boiler
+
+- [Le contrôle d'une chaudière centrale# Controlling a Central Boiler](#le-contrôle-dune-chaudière-centrale-controlling-a-central-boiler)
+  - [Principle](#principle)
+  - [Configuration](#configuration)
+    - [How to Find the Right Action?](#how-to-find-the-right-action)
+  - [Events](#events)
+  - [Warning](#warning)
+
+You can control a centralized boiler. As long as it's possible to trigger or stop the boiler from Home Assistant, Versatile Thermostat will be able to control it directly.
+
+## Principle
+The basic principle is as follows:
+1. A new entity of type `binary_sensor`, named by default `binary_sensor.central_boiler`, is added.
+2. In the configuration of the _VTherms_, you specify whether the _VTherm_ should control the boiler. In a heterogeneous installation, some _VTherms_ should control the boiler, and others should not. Therefore, you need to indicate in each _VTherm_ configuration whether it controls the boiler.
+3. The `binary_sensor.central_boiler` listens for state changes in the equipment of the _VTherms_ marked as controlling the boiler.
+4. When the number of devices controlled by the _VTherm_ requesting heating (i.e., when its `hvac_action` changes to `Heating`) exceeds a configurable threshold, the `binary_sensor.central_boiler` turns `on`, and **if an activation service has been configured, that service is called**.
+5. If the number of devices requesting heating drops below the threshold, the `binary_sensor.central_boiler` turns `off`, and **if a deactivation service has been configured, that service is called**.
+6. You have access to two entities:
+   - A `number` type entity, named by default `number.boiler_activation_threshold`, which gives the activation threshold. This threshold is the number of devices (radiators) requesting heating.
+   - A `sensor` type entity, named by default `sensor.nb_device_active_for_boiler`, which shows the number of devices requesting heating. For example, a _VTherm_ with 4 valves, 3 of which request heating, will make this sensor show 3. Only the devices from _VTherms_ marked to control the central boiler are counted.
+
+You therefore always have the information to manage and adjust the triggering of the boiler.
+
+All these entities are linked to the central configuration service:
+
+![Boiler Control Entities](images/entitites-central-boiler.png)
+
+## Configuration
+To configure this feature, you need a centralized configuration (see [Configuration](#configuration)) and check the 'Add Central Boiler' box:
+
+![Add a Central Boiler](images/config-central-boiler-1.png)
+
+On the next page, you can provide the configuration for the actions (e.g., services) to be called when the boiler is turned on/off:
+
+![Add a Central Boiler](images/config-central-boiler-2.png)
+
+The actions (e.g., services) are configured as described on the page:
+1. The general format is `entity_id/service_id[/attribute:value]` (where `/attribute:value` is optional).
+2. `entity_id` is the name of the entity controlling the boiler in the form `domain.entity_name`. For example: `switch.chaudiere` for a boiler controlled by a switch, or `climate.chaudière` for a boiler controlled by a thermostat, or any other entity that allows boiler control (there is no limitation). You can also toggle inputs (`helpers`) such as `input_boolean` or `input_number`.
+3. `service_id` is the name of the service to be called in the form `domain.service_name`. For example: `switch.turn_on`, `switch.turn_off`, `climate.set_temperature`, `climate.set_hvac_mode` are valid examples.
+4. Some services require a parameter. This could be the 'HVAC Mode' for `climate.set_hvac_mode` or the target temperature for `climate.set_temperature`. This parameter should be configured in the format `attribute:value` at the end of the string.
+
+Examples (to adjust to your case):
+- `climate.chaudiere/climate.set_hvac_mode/hvac_mode:heat`: to turn the boiler thermostat on in heating mode.
+- `climate.chaudiere/climate.set_hvac_mode/hvac_mode:off`: to turn off the boiler thermostat.
+- `switch.pompe_chaudiere/switch.turn_on`: to turn on the switch powering the boiler pump.
+- `switch.pompe_chaudiere/switch.turn_off`: to turn off the switch powering the boiler pump.
+- ...
+
+### How to Find the Right Action?
+To find the correct action to use, it's best to go to "Developer Tools / Services", search for the action to call, the entity to control, and any required parameters.
+Click 'Call Service'. If your boiler turns on, you have the correct configuration. Then switch to YAML mode and copy the parameters.
+
+Example:
+
+In "Developer Tools / Actions":
+
+![Service Configuration](images/dev-tools-turnon-boiler-1.png)
+
+In YAML mode:
+
+![Service Configuration](images/dev-tools-turnon-boiler-2.png)
+
+The service to configure will then be: `climate.sonoff/climate.set_hvac_mode/hvac_mode:heat` (note the removal of spaces in `hvac_mode:heat`).
+
+Do the same for the off service, and you’re ready to go.
+
+## Events
+
+Each successful boiler activation or deactivation sends an event from Versatile Thermostat. This can be captured by an automation, for example, to notify you of the change.
+The events look like this:
+
+An activation event:
+```yaml
+event_type: versatile_thermostat_central_boiler_event
+data:
+  central_boiler: true
+  entity_id: binary_sensor.central_boiler
+  name: Central boiler
+  state_attributes: null
+origin: LOCAL
+time_fired: "2024-01-14T11:33:52.342026+00:00"
+context:
+  id: 01HM3VZRJP3WYYWPNSDAFARW1T
+  parent_id: null
+  user_id: null
+```yaml
+event_type: versatile_thermostat_central_boiler_event
+data:
+  central_boiler: true
+  entity_id: binary_sensor.central_boiler
+  name: Central boiler
+  state_attributes: null
+origin: LOCAL
+time_fired: "2024-01-14T11:33:52.342026+00:00"
+context:
+  id: 01HM3VZRJP3WYYWPNSDAFARW1T
+  parent_id: null
+  user_id: null
+```
+
+Un évènement d'extinction :
+```yaml
+event_type: versatile_thermostat_central_boiler_event
+data:
+  central_boiler: false
+  entity_id: binary_sensor.central_boiler
+  name: Central boiler
+  state_attributes: null
+origin: LOCAL
+time_fired: "2024-01-14T11:43:52.342026+00:00"
+context:
+  id: 01HM3VZRJP3WYYWPNSDAFBRW1T
+  parent_id: null
+  user_id: null
+```
+
+## Warning
+
+> ![Astuce](images/tips.png) _*Notes*_
+>
+> Software or home automation control of a central boiler may pose risks to its proper operation. Before using these functions, ensure that your boiler has proper safety features and that they are functioning correctly. For example, turning on a boiler with all valves closed can create excessive pressure.
--- a/documentation/en/feature-central-mode.md
+++ b/documentation/en/feature-central-mode.md
@@ -0,0 +1,31 @@
+# Centralized Control
+
+- [Centralized Control](#centralized-control)
+  - [Configuration of Centralized Control](#configuration-of-centralized-control)
+  - [Usage](#usage)
+
+This feature allows you to control all your _VTherms_ from a single control point.
+A typical use case is when you leave for an extended period and want to set all your _VTherms_ to frost protection, and when you return, you want to set them back to their initial state.
+
+Centralized control is done from a special _VTherm_ called centralized configuration. See [here](creation.md#centralized-configuration) for more information.
+
+## Configuration of Centralized Control
+
+If you have set up a centralized configuration, you will have a new entity named `select.central_mode` that allows you to control all _VTherms_ with a single action.
+
+![central_mode](images/central-mode.png)
+
+This entity appears as a list of choices containing the following options:
+1. `Auto`: the 'normal' mode where each _VTherm_ operates autonomously,
+2. `Stopped`: all _VTherms_ are turned off (`hvac_off`),
+3. `Heat only`: all _VTherms_ are set to heating mode if supported, otherwise they are stopped,
+4. `Cool only`: all _VTherms_ are set to cooling mode if supported, otherwise they are stopped,
+5. `Frost protection`: all _VTherms_ are set to frost protection mode if supported, otherwise they are stopped.
+
+## Usage
+
+For a _VTherm_ to be controllable centrally, its configuration attribute named `use_central_mode` must be true. This attribute is available in the configuration page `Main Attributes`.
+
+![central_mode](images/use-central-mode.png)
+
+This means you can control all _VTherms_ (those explicitly designated) with a single control.
--- a/documentation/en/feature-motion.md
+++ b/documentation/en/feature-motion.md
@@ -0,0 +1,40 @@
+# Motion or Activity Detection
+
+- [Motion or Activity Detection](#motion-or-activity-detection)
+  - [Configure Activity Mode or Motion Detection](#configure-activity-mode-or-motion-detection)
+  - [Usage](#usage)
+
+This feature allows you to change presets when motion is detected in a room. If you don't want to heat your office when the room is occupied and only when the room is occupied, you need a motion (or presence) sensor in the room and configure this feature.
+
+This function is often confused with the presence feature. They are complementary but not interchangeable. The 'motion' function is local to a room equipped with a motion sensor, while the 'presence' function is designed to be global to the entire home.
+
+## Configure Activity Mode or Motion Detection
+
+If you have chosen the `With motion detection` feature:
+
+![image](images/config-motion.png)
+
+What we need:
+- a **motion sensor**. Entity ID of a motion sensor. The states of the motion sensor must be "on" (motion detected) or "off" (no motion detected),
+- a **detection delay** (in seconds) defining how long we wait for confirmation of the motion before considering the motion. This parameter can be **greater than your motion sensor's delay**, otherwise, the detection will happen with every motion detected by the sensor,
+- an **inactivity delay** (in seconds) defining how long we wait for confirmation of no motion before no longer considering the motion,
+- a **"motion" preset**. We will use the temperature of this preset when activity is detected,
+- a **"no motion" preset**. We will use the temperature of this second preset when no activity is detected.
+
+## Usage
+
+To tell a _VTherm_ that it should listen to the motion sensor, you must set it to the special 'Activity' preset. If you have installed the Versatile Thermostat UI card (see [here](additions.md#much-better-with-the-versatile-thermostat-ui-card)), this preset is displayed as follows: ![activity preset](images/activity-preset-icon.png).
+
+You can then, upon request, set a _VTherm_ to motion detection mode.
+
+The behavior will be as follows:
+- we have a room with a thermostat set to activity mode, the "motion" mode chosen is comfort (21.5°C), the "no motion" mode chosen is Eco (18.5°C), and the motion delay is 30 seconds on detection and 5 minutes on the end of detection.
+- the room has been empty for a while (no activity detected), the setpoint temperature in this room is 18.5°.
+- someone enters the room, and activity is detected if the motion is present for at least 30 seconds. The temperature then goes up to 21.5°.
+- if the motion is present for less than 30 seconds (quick passage), the temperature stays at 18.5°.
+- imagine the temperature has gone up to 21.5°, when the person leaves the room, after 5 minutes the temperature is returned to 18.5°.
+- if the person returns before the 5 minutes, the temperature stays at 21.5°.
+
+> ![Tip](images/tips.png) _*Notes*_
+> 1. As with other presets, `Activity` will only be offered if it is correctly configured. In other words, all 4 configuration keys must be set.
+> 2. If you are using the Versatile Thermostat UI card (see [here](additions.md#much-better-with-the-versatile-thermostat-ui-card)), motion detection is represented as follows: ![motion](images/motion-detection-icon.png).
--- a/documentation/en/feature-power.md
+++ b/documentation/en/feature-power.md
@@ -0,0 +1,46 @@
+# Power Management - Load Shedding
+
+- [Power Management - Load Shedding](#power-management---load-shedding)
+  - [Configure Power Management](#configure-power-management)
+
+This feature allows you to regulate the electricity consumption of your heaters. Known as load shedding, this feature enables you to limit the electrical consumption of your heating device if overcapacity conditions are detected.
+You will need a **sensor for the total instantaneous power consumption** of your home, as well as a **sensor for the maximum allowed power**.
+
+The behavior of this feature is basic:
+1. when the _VTherm_ is about to turn on a device,
+2. it compares the last known value of the power consumption sensor with the last value of the maximum allowed power. If there is a remaining margin greater than or equal to the declared power of the _VTherm_'s devices, then the _VTherm_ and its devices will be turned on. Otherwise, they will remain off until the next cycle.
+
+WARNING: This very basic operation **is not a safety function** but more of an optimization feature to manage consumption at the cost of heating performance. Overloads may occur depending on the frequency of updates from your consumption sensors, and the actual power used by your devices. Therefore, you must always maintain a safety margin.
+
+Typical use case:
+1. you have an electricity meter limited to 11 kW,
+2. you occasionally charge an electric vehicle at 5 kW,
+3. that leaves 6 kW for everything else, including heating,
+4. you have 1 kW of other equipment running,
+5. you have declared a sensor (`input_number`) for the maximum allowed power at 9 kW (= 11 kW - the reserve for other devices - margin)
+
+If the vehicle is charging, the total power consumed is 6 kW (5+1), and a _VTherm_ will only turn on if its declared power is 3 kW max (9 kW - 6 kW).
+If the vehicle is charging and another _VTherm_ of 2 kW is running, the total power consumed is 8 kW (5+1+2), and a _VTherm_ will only turn on if its declared power is 1 kW max (9 kW - 8 kW). Otherwise, it will wait until the next cycle.
+
+If the vehicle is not charging, the total power consumed is 1 kW, and a _VTherm_ will only turn on if its declared power is 8 kW max (9 kW - 1 kW).
+
+## Configure Power Management
+
+If you have chosen the `With power detection` feature, configure it as follows:
+
+![image](images/config-power.png)
+
+1. the entity ID of the **instantaneous power consumption sensor** for your home,
+2. the entity ID of the **maximum allowed power sensor**,
+3. the temperature to apply if load shedding is activated.
+
+Note that all power values must have the same units (kW or W, for example).
+Having a **maximum allowed power sensor** allows you to adjust the maximum power over time using a scheduler or automation.
+
+> ![Tip](images/tips.png) _*Notes*_
+>
+> 1. In case of load shedding, the radiator is set to the preset named `power`. This is a hidden preset, and you cannot select it manually.
+> 2. Always keep a margin, as the maximum power may briefly be exceeded while waiting for the next cycle calculation, or due to unregulated equipment.
+> 3. If you don't want to use this feature, uncheck it in the 'Functions' menu.
+> 4. If a _VTherm_ controls multiple devices, the **electrical consumption of your heating** must match the sum of the powers.
+> 5. If you are using the Versatile Thermostat UI card (see [here](additions.md#much-better-with-the-versatile-thermostat-ui-card)), load shedding is represented as follows: ![load shedding](images/power-exceeded-icon.png).
--- a/documentation/en/feature-presence.md
+++ b/documentation/en/feature-presence.md
@@ -0,0 +1,24 @@
+# Presence / Absence Management
+
+- [Presence / Absence Management](#presence--absence-management)
+  - [Configure Presence (or Absence)](#configure-presence-or-absence)
+
+## Configure Presence (or Absence)
+
+If this feature is selected, it allows you to dynamically adjust the preset temperatures of the thermostat when presence (or absence) is detected. To do this, you need to configure the temperature to be used for each preset when presence is disabled. When the presence sensor turns off, these temperatures will be applied. When it turns back on, the "normal" temperature configured for the preset will be used. See [preset management](feature-presets.md).
+
+To configure presence, fill out this form:
+
+![image](images/config-presence.png)
+
+For this, you simply need to configure an **occupancy sensor** whose state must be 'on' or 'home' if someone is present, or 'off' or 'not_home' otherwise.
+
+Temperatures are configured in the entities of the device corresponding to your _VTherm_ (Settings/Integration/Versatile Thermostat/the vtherm).
+
+WARNING: People groups do not work as a presence sensor. They are not recognized as a presence sensor. You need to use a template as described here [Using a People Group as a Presence Sensor](troubleshooting.md#using-a-people-group-as-a-presence-sensor).
+
+> ![Tip](images/tips.png) _*Notes*_
+>
+> 1. The temperature change is immediate and is reflected on the front panel. The calculation will consider the new target temperature at the next cycle calculation.
+> 2. You can use the direct person.xxxx sensor or a Home Assistant sensor group. The presence sensor handles the states `on` or `home` as present and `off` or `not_home` as absent.
+> 3. To pre-heat your home when everyone is absent, you can add an `input_boolean` entity to your people group. If you set this `input_boolean` to 'On', the presence sensor will be forced to 'On' and the presets with presence will be used. You can also set this `input_boolean` to 'On' via an automation, for example, when you leave a zone to start preheating your home.
--- a/documentation/en/feature-presets.md
+++ b/documentation/en/feature-presets.md
@@ -0,0 +1,30 @@
+# Presets (Pre-configured Settings)
+
+- [Presets (Pre-configured Settings)](#presets-pre-configured-settings)
+  - [Configure Pre-configured Temperatures](#configure-pre-configured-temperatures)
+
+## Configure Pre-configured Temperatures
+
+The preset mode allows you to pre-configure the target temperature. Used in conjunction with Scheduler (see [scheduler](additions#the-scheduler-component)), you'll have a powerful and simple way to optimize the temperature relative to the electricity consumption in your home. The managed presets are as follows:
+ - **Eco**: the device is in energy-saving mode
+ - **Comfort**: the device is in comfort mode
+ - **Boost**: the device fully opens all valves
+
+If the AC mode is used, you can also configure temperatures when the equipment is in air conditioning mode.
+
+**None** is always added to the list of modes, as it is a way to not use presets but instead set a **manual temperature**.
+
+The presets are configured directly from the _VTherm_ entities or the central configuration if you're using centralized control. Upon creating the _VTherm_, you will have different entities that will allow you to set the temperatures for each preset:
+
+![presets](images/config-preset-temp.png).
+
+The list of entities varies depending on your feature choices:
+1. If the 'presence detection' function is activated, you will have the presets with an "absence" version prefixed with _abs_.
+2. If you have selected the _AC_ option, you will also have presets for 'air conditioning' prefixed with _clim_.
+
+> ![Tip](images/tips.png) _*Notes*_
+>
+> 1. When you manually change the target temperature, the preset switches to None (no preset).
+> 2. The standard preset `Away` is a hidden preset that cannot be directly selected. Versatile Thermostat uses presence management or motion detection to automatically and dynamically adjust the target temperature based on presence in the home or activity in the room. See [presence management](feature-presence.md).
+> 3. If you're using load shedding management, you will see a hidden preset named `power`. The heating element's preset is set to "power" when overload conditions are met and load shedding is active for that heating element. See [power management](feature-power.md).
+> 4. If you're using advanced configuration, you will see the preset set to `safety` if the temperature could not be retrieved after a certain delay. See [Safety Mode](feature-advanced.md#safety-mode).
--- a/documentation/en/feature-window.md
+++ b/documentation/en/feature-window.md
@@ -0,0 +1,64 @@
+# Door/Window Open Detection
+
+- [Door/Window Open Detection](#doorwindow-open-detection)
+  - [Sensor Mode](#sensor-mode)
+  - [Auto Mode](#auto-mode)
+
+You must have selected the `With Open Detection` feature on the first page to reach this page.
+Open detection can be done in two ways:
+1. By using a sensor placed on the opening (sensor mode),
+2. By detecting a sudden temperature drop (auto mode)
+
+## Sensor Mode
+To switch to sensor mode, you need to provide an entity of type `binary_sensor` or `input_boolean`.
+In this mode, you need to fill in the following information:
+
+![mode window sensor](images/config-window-sensor.png)
+
+1. A **delay in seconds** before any change. This allows you to open a window quickly without stopping the heating.
+2. The action to take when the opening is detected as open. The possible actions are:
+   1. _Turn off_: the _VTherm_ will be turned off.
+   2. _Fan only_: heating or cooling will be turned off, but the equipment will continue to ventilate (for compatible equipment).
+   3. _Frost protection_: the "Frost Protection" preset temperature will be selected on the _VTherm_ without changing the current preset (see notes below).
+   4. _Eco_: the "Eco" preset temperature will be applied to the _VTherm_ without changing the current preset (see notes below).
+
+When the detector switches to open:
+1. _VTherm_ waits for the specified delay.
+2. If the window is still open after the delay, the _VTherm_ state (Heating / Cooling / ..., current preset, current target temperature) is saved and the action is performed.
+
+Similarly, when the detector switches to closed:
+1. _VTherm_ waits for the specified delay.
+2. If the window is still closed after the delay, the state before the window opening is restored.
+
+## Auto Mode
+In auto mode, the configuration is as follows:
+
+![image](images/config-window-auto.png)
+
+1. A **delay in seconds** before any change. This allows you to open a window quickly without stopping the heating.
+2. A detection threshold in degrees per hour. When the temperature drops beyond this threshold, the thermostat will turn off. The lower this value, the faster the detection (with a higher risk of false positives).
+3. A threshold for ending detection in degrees per hour. When the temperature drop exceeds this value, the thermostat will return to the previous mode (mode and preset).
+4. A maximum detection duration. Beyond this duration, the thermostat will return to its previous mode and preset even if the temperature continues to drop.
+5. The action to take when the opening is detected as open. The actions are the same as in sensor mode described above.
+
+To adjust the thresholds, it is recommended to start with the reference values and adjust the detection thresholds. Some tests gave me the following values (for an office):
+- Detection threshold: 3°C/hour
+- No detection threshold: 0°C/hour
+- Max duration: 30 min.
+
+A new sensor called "slope" has been added for all thermostats. It provides the slope of the temperature curve in °C/hour (or °K/hour). This slope is smoothed and filtered to avoid aberrant thermometer values that could interfere with the measurement.
+
+![image](images/temperature-slope.png)
+
+To adjust it properly, it is recommended to display both the temperature curve and the slope of the curve ("slope") on the same historical graph:
+
+![image](images/window-auto-tuning.png)
+
+> ![Tip](images/tips.png) _*Notes*_
+>
+> 1. If you want to use **multiple door/window sensors** to automate your thermostat, simply create a group with the usual behavior (https://www.home-assistant.io/integrations/binary_sensor.group/)
+> 2. If you don't have a door/window sensor in your room, simply leave the sensor entity ID empty.
+> 3. **Only one mode is allowed**. You cannot configure a thermostat with both a sensor and auto detection. The two modes might contradict each other, so both modes cannot be active at the same time.
+> 4. It is not recommended to use auto mode for equipment subjected to frequent and normal temperature variations (hallways, open areas, etc.).
+> 5. To avoid interfering with your current preset settings, the actions _Frost protection_ and _Eco_ change the target temperature without changing the preset. So, you may notice a discrepancy between the selected preset and the setpoint.
+> 6. If you use the Versatile Thermostat UI card (see [here](additions.md#even-better-with-the-versatile-thermostat-ui-card)), open detection is represented as follows: ![window](images/window-detection-icon.png).
--- a/documentation/en/images/activity-preset-icon.png
+++ b/documentation/en/images/activity-preset-icon.png
--- a/documentation/en/images/add-an-integration.png
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--- a/documentation/en/images/auto-start-stop-icon.png
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--- a/documentation/en/images/central-mode.png
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--- a/documentation/en/images/colored-thermostat-sensors.png
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--- a/documentation/en/images/config-advanced.png
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--- a/documentation/en/images/config-auto-start-stop.png
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--- a/documentation/en/images/config-central-boiler-1.png
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--- a/documentation/en/images/config-motion.png
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--- a/documentation/en/images/config-power.png
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--- a/documentation/en/images/config-presence.png
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--- a/documentation/en/images/config-preset-temp.png
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--- a/documentation/en/images/config-self-regulation-valve-1.png
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--- a/documentation/en/images/config-self-regulation-valve-2.png
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--- a/documentation/en/images/config-tpi.png
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--- a/documentation/en/images/config-use-internal-temp.png
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--- a/documentation/en/images/config-window-auto.png
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--- a/documentation/en/images/config-window-sensor.png
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--- a/documentation/en/images/dev-tools-climate.png
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--- a/documentation/en/images/entitites-central-boiler.png
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--- a/documentation/en/images/entity-follow-under-temp-change.png
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--- a/documentation/en/images/motion-detection-icon.png
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--- a/documentation/en/images/my-tuning.png
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--- a/documentation/en/images/over-climate-schema.png
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--- a/documentation/en/images/over-switch-schema.png
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--- a/documentation/en/images/over-valve-schema.png
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--- a/documentation/en/images/plotly-curves.png
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--- a/documentation/en/images/power-exceeded-icon.png
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--- a/documentation/en/images/results-over-climate-2.png
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--- a/documentation/en/images/safety-mode-icon.png
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--- a/Show More
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