Cleanup KNX integration (#52168)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

homeassistant/components/knx/__init__.py

@@ -298,7 +298,6 @@ class KNXModule:
             return self.connection_config_tunneling()
         if CONF_KNX_ROUTING in self.config[DOMAIN]:
             return self.connection_config_routing()
-        # config from xknx.yaml always has priority later on
         return ConnectionConfig(auto_reconnect=True)
 
     def connection_config_routing(self) -> ConnectionConfig:
@@ -379,14 +378,16 @@ class KNXModule:
                         "Service event_register could not remove event for '%s'",
                         str(group_address),
                     )
-        else:
+            return
-            for group_address in group_addresses:
+
-                if group_address not in self._knx_event_callback.group_addresses:
+        for group_address in group_addresses:
-                    self._knx_event_callback.group_addresses.append(group_address)
+            if group_address in self._knx_event_callback.group_addresses:
-                    _LOGGER.debug(
+                continue
-                        "Service event_register registered event for '%s'",
+            self._knx_event_callback.group_addresses.append(group_address)
-                        str(group_address),
+            _LOGGER.debug(
-                    )
+                "Service event_register registered event for '%s'",
+                str(group_address),
+            )
 
     async def service_exposure_register_modify(self, call: ServiceCall) -> None:
         """Service for adding or removing an exposure to KNX bus."""
@@ -405,7 +406,6 @@ class KNXModule:
 
         if group_address in self.service_exposures:
             replaced_exposure = self.service_exposures.pop(group_address)
-            assert replaced_exposure.device is not None
             _LOGGER.warning(
                 "Service exposure_register replacing already registered exposure for '%s' - %s",
                 group_address,

homeassistant/components/knx/binary_sensor.py

@@ -31,19 +31,18 @@ async def async_setup_platform(
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXBinarySensor(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXBinarySensor(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 class KNXBinarySensor(KnxEntity, BinarySensorEntity):
     """Representation of a KNX binary sensor."""
 
+    _device: XknxBinarySensor
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of KNX binary sensor."""
-        self._device: XknxBinarySensor
         super().__init__(
             device=XknxBinarySensor(
                 xknx,
@@ -58,13 +57,9 @@ class KNXBinarySensor(KnxEntity, BinarySensorEntity):
                 reset_after=config.get(BinarySensorSchema.CONF_RESET_AFTER),
             )
         )
-        self._device_class: str | None = config.get(CONF_DEVICE_CLASS)
+        self._attr_device_class = config.get(CONF_DEVICE_CLASS)
-        self._unique_id = f"{self._device.remote_value.group_address_state}"
+        self._attr_force_update = self._device.ignore_internal_state
-
+        self._attr_unique_id = str(self._device.remote_value.group_address_state)
-    @property
-    def device_class(self) -> str | None:
-        """Return the class of this sensor."""
-        return self._device_class
 
     @property
     def is_on(self) -> bool:
@@ -84,13 +79,3 @@ class KNXBinarySensor(KnxEntity, BinarySensorEntity):
                 dt.as_utc(self._device.last_telegram.timestamp)
             )
         return attr
-
-    @property
-    def force_update(self) -> bool:
-        """
-        Return True if state updates should be forced.
-
-        If True, a state change will be triggered anytime the state property is
-        updated, not just when the value changes.
-        """
-        return self._device.ignore_internal_state

homeassistant/components/knx/climate.py

@@ -46,11 +46,9 @@ async def async_setup_platform(
     xknx: XKNX = hass.data[DOMAIN].xknx
 
     _async_migrate_unique_id(hass, platform_config)
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXClimate(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXClimate(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 @callback
@@ -168,22 +166,20 @@ def _create_climate(xknx: XKNX, config: ConfigType) -> XknxClimate:
 class KNXClimate(KnxEntity, ClimateEntity):
     """Representation of a KNX climate device."""
 
+    _device: XknxClimate
+    _attr_supported_features = SUPPORT_TARGET_TEMPERATURE | SUPPORT_PRESET_MODE
+    _attr_temperature_unit = TEMP_CELSIUS
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of a KNX climate device."""
-        self._device: XknxClimate
         super().__init__(_create_climate(xknx, config))
-        self._unique_id = (
+        self._attr_target_temperature_step = self._device.temperature_step
+        self._attr_unique_id = (
             f"{self._device.temperature.group_address_state}_"
             f"{self._device.target_temperature.group_address_state}_"
             f"{self._device.target_temperature.group_address}_"
             f"{self._device._setpoint_shift.group_address}"  # pylint: disable=protected-access
         )
-        self._unit_of_measurement = TEMP_CELSIUS
-
-    @property
-    def supported_features(self) -> int:
-        """Return the list of supported features."""
-        return SUPPORT_TARGET_TEMPERATURE | SUPPORT_PRESET_MODE
 
     async def async_update(self) -> None:
         """Request a state update from KNX bus."""
@@ -191,21 +187,11 @@ class KNXClimate(KnxEntity, ClimateEntity):
         if self._device.mode is not None:
             await self._device.mode.sync()
 
-    @property
-    def temperature_unit(self) -> str:
-        """Return the unit of measurement."""
-        return self._unit_of_measurement
-
     @property
     def current_temperature(self) -> float | None:
         """Return the current temperature."""
         return self._device.temperature.value
 
-    @property
-    def target_temperature_step(self) -> float:
-        """Return the supported step of target temperature."""
-        return self._device.temperature_step
-
     @property
     def target_temperature(self) -> float | None:
         """Return the temperature we try to reach."""

homeassistant/components/knx/const.py

@@ -37,8 +37,8 @@ CONF_STATE_ADDRESS: Final = "state_address"
 CONF_SYNC_STATE: Final = "sync_state"
 
 ATTR_COUNTER: Final = "counter"
-ATTR_SOURCE: Final = "source"
 ATTR_LAST_KNX_UPDATE: Final = "last_knx_update"
+ATTR_SOURCE: Final = "source"
 
 
 class ColorTempModes(Enum):

homeassistant/components/knx/cover.py

@@ -44,15 +44,12 @@ async def async_setup_platform(
     if not discovery_info or not discovery_info["platform_config"]:
         return
     platform_config = discovery_info["platform_config"]
-    _async_migrate_unique_id(hass, platform_config)
-
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    _async_migrate_unique_id(hass, platform_config)
-    for entity_config in platform_config:
+    async_add_entities(
-        entities.append(KNXCover(xknx, entity_config))
+        KNXCover(xknx, entity_config) for entity_config in platform_config
-
+    )
-    async_add_entities(entities)
 
 
 @callback
@@ -85,9 +82,10 @@ def _async_migrate_unique_id(
 class KNXCover(KnxEntity, CoverEntity):
     """Representation of a KNX cover."""
 
+    _device: XknxCover
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize the cover."""
-        self._device: XknxCover
         super().__init__(
             device=XknxCover(
                 xknx,
@@ -109,12 +107,15 @@ class KNXCover(KnxEntity, CoverEntity):
                 invert_angle=config[CoverSchema.CONF_INVERT_ANGLE],
             )
         )
-        self._device_class: str | None = config.get(CONF_DEVICE_CLASS)
+        self._unsubscribe_auto_updater: Callable[[], None] | None = None
-        self._unique_id = (
+
+        self._attr_device_class = config.get(CONF_DEVICE_CLASS) or (
+            DEVICE_CLASS_BLIND if self._device.supports_angle else None
+        )
+        self._attr_unique_id = (
             f"{self._device.updown.group_address}_"
             f"{self._device.position_target.group_address}"
         )
-        self._unsubscribe_auto_updater: Callable[[], None] | None = None
 
     @callback
     async def after_update_callback(self, device: XknxDevice) -> None:
@@ -123,15 +124,6 @@ class KNXCover(KnxEntity, CoverEntity):
         if self._device.is_traveling():
             self.start_auto_updater()
 
-    @property
-    def device_class(self) -> str | None:
-        """Return the class of this device, from component DEVICE_CLASSES."""
-        if self._device_class:
-            return self._device_class
-        if self._device.supports_angle:
-            return DEVICE_CLASS_BLIND
-        return None
-
     @property
     def supported_features(self) -> int:
         """Flag supported features."""

homeassistant/components/knx/fan.py

@@ -34,23 +34,19 @@ async def async_setup_platform(
     """Set up fans for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(KNXFan(xknx, entity_config) for entity_config in platform_config)
-    for entity_config in platform_config:
-        entities.append(KNXFan(xknx, entity_config))
-
-    async_add_entities(entities)
 
 
 class KNXFan(KnxEntity, FanEntity):
     """Representation of a KNX fan."""
 
+    _device: XknxFan
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of KNX fan."""
-        self._device: XknxFan
         max_step = config.get(FanSchema.CONF_MAX_STEP)
         super().__init__(
             device=XknxFan(
@@ -67,10 +63,16 @@ class KNXFan(KnxEntity, FanEntity):
                 max_step=max_step,
             )
         )
-        self._unique_id = f"{self._device.speed.group_address}"
         # FanSpeedMode.STEP if max_step is set
         self._step_range: tuple[int, int] | None = (1, max_step) if max_step else None
 
+        self._attr_supported_features = (
+            SUPPORT_SET_SPEED | SUPPORT_OSCILLATE
+            if self._device.supports_oscillation
+            else SUPPORT_SET_SPEED
+        )
+        self._attr_unique_id = str(self._device.speed.group_address)
+
     async def async_set_percentage(self, percentage: int) -> None:
         """Set the speed of the fan, as a percentage."""
         if self._step_range:
@@ -79,16 +81,6 @@ class KNXFan(KnxEntity, FanEntity):
         else:
             await self._device.set_speed(percentage)
 
-    @property
-    def supported_features(self) -> int:
-        """Flag supported features."""
-        flags = SUPPORT_SET_SPEED
-
-        if self._device.supports_oscillation:
-            flags |= SUPPORT_OSCILLATE
-
-        return flags
-
     @property
     def percentage(self) -> int | None:
         """Return the current speed as a percentage."""

homeassistant/components/knx/knx_entity.py

@@ -14,10 +14,11 @@ from .const import DOMAIN
 class KnxEntity(Entity):
     """Representation of a KNX entity."""
 
+    _attr_should_poll = False
+
     def __init__(self, device: XknxDevice) -> None:
         """Set up device."""
         self._device = device
-        self._unique_id: str | None = None
 
     @property
     def name(self) -> str:
@@ -30,16 +31,6 @@ class KnxEntity(Entity):
         knx_module = cast(KNXModule, self.hass.data[DOMAIN])
         return knx_module.connected
 
-    @property
-    def should_poll(self) -> bool:
-        """No polling needed within KNX."""
-        return False
-
-    @property
-    def unique_id(self) -> str | None:
-        """Return the unique id of the device."""
-        return self._unique_id
-
     async def async_update(self) -> None:
         """Request a state update from KNX bus."""
         await self._device.sync()

homeassistant/components/knx/light.py

@@ -43,15 +43,12 @@ async def async_setup_platform(
     if not discovery_info or not discovery_info["platform_config"]:
         return
     platform_config = discovery_info["platform_config"]
-    _async_migrate_unique_id(hass, platform_config)
-
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    _async_migrate_unique_id(hass, platform_config)
-    for entity_config in platform_config:
+    async_add_entities(
-        entities.append(KNXLight(xknx, entity_config))
+        KNXLight(xknx, entity_config) for entity_config in platform_config
-
+    )
-    async_add_entities(entities)
 
 
 @callback
@@ -223,19 +220,21 @@ def _create_light(xknx: XKNX, config: ConfigType) -> XknxLight:
 class KNXLight(KnxEntity, LightEntity):
     """Representation of a KNX light."""
 
+    _device: XknxLight
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of KNX light."""
-        self._device: XknxLight
         super().__init__(_create_light(xknx, config))
-        self._unique_id = self._device_unique_id()
-        self._min_kelvin: int = config[LightSchema.CONF_MIN_KELVIN]
         self._max_kelvin: int = config[LightSchema.CONF_MAX_KELVIN]
-        self._min_mireds = color_util.color_temperature_kelvin_to_mired(
+        self._min_kelvin: int = config[LightSchema.CONF_MIN_KELVIN]
-            self._max_kelvin
+
-        )
+        self._attr_max_mireds = color_util.color_temperature_kelvin_to_mired(
-        self._max_mireds = color_util.color_temperature_kelvin_to_mired(
             self._min_kelvin
         )
+        self._attr_min_mireds = color_util.color_temperature_kelvin_to_mired(
+            self._max_kelvin
+        )
+        self._attr_unique_id = self._device_unique_id()
 
     def _device_unique_id(self) -> str:
         """Return unique id for this device."""
@@ -311,16 +310,6 @@ class KNXLight(KnxEntity, LightEntity):
                 )
         return None
 
-    @property
-    def min_mireds(self) -> int:
-        """Return the coldest color temp this light supports in mireds."""
-        return self._min_mireds
-
-    @property
-    def max_mireds(self) -> int:
-        """Return the warmest color temp this light supports in mireds."""
-        return self._max_mireds
-
     @property
     def color_mode(self) -> str | None:
         """Return the color mode of the light."""

homeassistant/components/knx/number.py

@@ -27,7 +27,6 @@ async def async_setup_platform(
     """Set up number entities for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
@@ -51,25 +50,25 @@ def _create_numeric_value(xknx: XKNX, config: ConfigType) -> NumericValue:
 class KNXNumber(KnxEntity, NumberEntity, RestoreEntity):
     """Representation of a KNX number."""
 
+    _device: NumericValue
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize a KNX number."""
-        self._device: NumericValue
         super().__init__(_create_numeric_value(xknx, config))
-        self._unique_id = f"{self._device.sensor_value.group_address}"
-
-        self._attr_min_value = config.get(
-            NumberSchema.CONF_MIN,
-            self._device.sensor_value.dpt_class.value_min,
-        )
         self._attr_max_value = config.get(
             NumberSchema.CONF_MAX,
             self._device.sensor_value.dpt_class.value_max,
         )
+        self._attr_min_value = config.get(
+            NumberSchema.CONF_MIN,
+            self._device.sensor_value.dpt_class.value_min,
+        )
         self._attr_step = config.get(
             NumberSchema.CONF_STEP,
             self._device.sensor_value.dpt_class.resolution,
         )
-        self._device.sensor_value.value = max(0, self.min_value)
+        self._attr_unique_id = str(self._device.sensor_value.group_address)
+        self._device.sensor_value.value = max(0, self._attr_min_value)
 
     async def async_added_to_hass(self) -> None:
         """Restore last state."""

homeassistant/components/knx/scene.py

@@ -26,23 +26,21 @@ async def async_setup_platform(
     """Set up the scenes for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXScene(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXScene(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 class KNXScene(KnxEntity, Scene):
     """Representation of a KNX scene."""
 
+    _device: XknxScene
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Init KNX scene."""
-        self._device: XknxScene
         super().__init__(
             device=XknxScene(
                 xknx,
@@ -51,7 +49,7 @@ class KNXScene(KnxEntity, Scene):
                 scene_number=config[SceneSchema.CONF_SCENE_NUMBER],
             )
         )
-        self._unique_id = (
+        self._attr_unique_id = (
             f"{self._device.scene_value.group_address}_{self._device.scene_number}"
         )
 

homeassistant/components/knx/select.py

@@ -28,10 +28,9 @@ async def async_setup_platform(
     async_add_entities: AddEntitiesCallback,
     discovery_info: DiscoveryInfoType | None = None,
 ) -> None:
-    """Set up number entities for KNX platform."""
+    """Set up select entities for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
@@ -54,20 +53,20 @@ def _create_raw_value(xknx: XKNX, config: ConfigType) -> RawValue:
 
 
 class KNXSelect(KnxEntity, SelectEntity, RestoreEntity):
-    """Representation of a KNX number."""
+    """Representation of a KNX select."""
+
+    _device: RawValue
 
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
-        """Initialize a KNX number."""
+        """Initialize a KNX select."""
-        self._device: RawValue
         super().__init__(_create_raw_value(xknx, config))
-        self._unique_id = f"{self._device.remote_value.group_address}"
-
         self._option_payloads: dict[str, int] = {
             option[SelectSchema.CONF_OPTION]: option[SelectSchema.CONF_PAYLOAD]
             for option in config[SelectSchema.CONF_OPTIONS]
         }
         self._attr_options = list(self._option_payloads)
         self._attr_current_option = None
+        self._attr_unique_id = str(self._device.remote_value.group_address)
 
     async def async_added_to_hass(self) -> None:
         """Restore last state."""
@@ -98,7 +97,7 @@ class KNXSelect(KnxEntity, SelectEntity, RestoreEntity):
 
     async def async_select_option(self, option: str) -> None:
         """Change the selected option."""
-        if payload := self._option_payloads.get(option):
+        payload = self._option_payloads.get(option)
-            await self._device.set(payload)
+        if payload is None:
-            return
+            raise ValueError(f"Invalid option for {self.entity_id}: {option}")
-        raise ValueError(f"Invalid option for {self.entity_id}: {option}")
+        await self._device.set(payload)

homeassistant/components/knx/sensor.py

@@ -27,15 +27,12 @@ async def async_setup_platform(
     """Set up sensor(s) for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXSensor(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXSensor(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 def _create_sensor(xknx: XKNX, config: ConfigType) -> XknxSensor:
@@ -53,30 +50,25 @@ def _create_sensor(xknx: XKNX, config: ConfigType) -> XknxSensor:
 class KNXSensor(KnxEntity, SensorEntity):
     """Representation of a KNX sensor."""
 
+    _device: XknxSensor
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of a KNX sensor."""
-        self._device: XknxSensor
         super().__init__(_create_sensor(xknx, config))
-        self._unique_id = f"{self._device.sensor_value.group_address_state}"
+        self._attr_device_class = (
+            self._device.ha_device_class()
+            if self._device.ha_device_class() in DEVICE_CLASSES
+            else None
+        )
+        self._attr_force_update = self._device.always_callback
+        self._attr_unique_id = str(self._device.sensor_value.group_address_state)
+        self._attr_unit_of_measurement = self._device.unit_of_measurement()
 
     @property
     def state(self) -> StateType:
         """Return the state of the sensor."""
         return self._device.resolve_state()
 
-    @property
-    def unit_of_measurement(self) -> str | None:
-        """Return the unit this state is expressed in."""
-        return self._device.unit_of_measurement()
-
-    @property
-    def device_class(self) -> str | None:
-        """Return the device class of the sensor."""
-        device_class = self._device.ha_device_class()
-        if device_class in DEVICE_CLASSES:
-            return device_class
-        return None
-
     @property
     def extra_state_attributes(self) -> dict[str, Any] | None:
         """Return device specific state attributes."""
@@ -88,13 +80,3 @@ class KNXSensor(KnxEntity, SensorEntity):
                 dt.as_utc(self._device.last_telegram.timestamp)
             )
         return attr
-
-    @property
-    def force_update(self) -> bool:
-        """
-        Return True if state updates should be forced.
-
-        If True, a state change will be triggered anytime the state property is
-        updated, not just when the value changes.
-        """
-        return self._device.always_callback

homeassistant/components/knx/switch.py

@@ -27,23 +27,21 @@ async def async_setup_platform(
     """Set up switch(es) for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXSwitch(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXSwitch(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 class KNXSwitch(KnxEntity, SwitchEntity, RestoreEntity):
     """Representation of a KNX switch."""
 
+    _device: XknxSwitch
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of KNX switch."""
-        self._device: XknxSwitch
         super().__init__(
             device=XknxSwitch(
                 xknx,
@@ -53,7 +51,7 @@ class KNXSwitch(KnxEntity, SwitchEntity, RestoreEntity):
                 invert=config[SwitchSchema.CONF_INVERT],
             )
         )
-        self._unique_id = f"{self._device.switch.group_address}"
+        self._attr_unique_id = str(self._device.switch.group_address)
 
     async def async_added_to_hass(self) -> None:
         """Restore last state."""

homeassistant/components/knx/weather.py

@@ -24,15 +24,12 @@ async def async_setup_platform(
     """Set up weather entities for KNX platform."""
     if not discovery_info or not discovery_info["platform_config"]:
         return
-
     platform_config = discovery_info["platform_config"]
     xknx: XKNX = hass.data[DOMAIN].xknx
 
-    entities = []
+    async_add_entities(
-    for entity_config in platform_config:
+        KNXWeather(xknx, entity_config) for entity_config in platform_config
-        entities.append(KNXWeather(xknx, entity_config))
+    )
-
-    async_add_entities(entities)
 
 
 def _create_weather(xknx: XKNX, config: ConfigType) -> XknxWeather:
@@ -74,22 +71,19 @@ def _create_weather(xknx: XKNX, config: ConfigType) -> XknxWeather:
 class KNXWeather(KnxEntity, WeatherEntity):
     """Representation of a KNX weather device."""
 
+    _device: XknxWeather
+    _attr_temperature_unit = TEMP_CELSIUS
+
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize of a KNX sensor."""
-        self._device: XknxWeather
         super().__init__(_create_weather(xknx, config))
-        self._unique_id = f"{self._device._temperature.group_address_state}"
+        self._attr_unique_id = str(self._device._temperature.group_address_state)
 
     @property
     def temperature(self) -> float | None:
         """Return current temperature."""
         return self._device.temperature
 
-    @property
-    def temperature_unit(self) -> str:
-        """Return temperature unit."""
-        return TEMP_CELSIUS
-
     @property
     def pressure(self) -> float | None:
         """Return current air pressure."""