diff --git a/homeassistant/components/rachio/binary_sensor.py b/homeassistant/components/rachio/binary_sensor.py
index 2fe99fb442e..294931b7538 100644
--- a/homeassistant/components/rachio/binary_sensor.py
+++ b/homeassistant/components/rachio/binary_sensor.py
@@ -119,7 +119,7 @@ class RachioControllerOnlineBinarySensor(RachioControllerBinarySensor):
 
         self.async_write_ha_state()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         self._state = self._controller.init_data[KEY_STATUS] == STATUS_ONLINE
 
@@ -165,7 +165,7 @@ class RachioRainSensor(RachioControllerBinarySensor):
 
         self.async_write_ha_state()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         self._state = self._controller.init_data[KEY_RAIN_SENSOR_TRIPPED]
 
diff --git a/homeassistant/components/rachio/switch.py b/homeassistant/components/rachio/switch.py
index 227e8beaec3..5e91d339d0d 100644
--- a/homeassistant/components/rachio/switch.py
+++ b/homeassistant/components/rachio/switch.py
@@ -3,6 +3,7 @@ from abc import abstractmethod
 from contextlib import suppress
 from datetime import timedelta
 import logging
+from typing import Any
 
 import voluptuous as vol
 
@@ -237,15 +238,15 @@ class RachioStandbySwitch(RachioSwitch):
 
         self.async_write_ha_state()
 
-    def turn_on(self, **kwargs) -> None:
+    def turn_on(self, **kwargs: Any) -> None:
         """Put the controller in standby mode."""
         self._controller.rachio.device.turn_off(self._controller.controller_id)
 
-    def turn_off(self, **kwargs) -> None:
+    def turn_off(self, **kwargs: Any) -> None:
         """Resume controller functionality."""
         self._controller.rachio.device.turn_on(self._controller.controller_id)
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         if KEY_ON in self._controller.init_data:
             self._state = not self._controller.init_data[KEY_ON]
@@ -309,17 +310,17 @@ class RachioRainDelay(RachioSwitch):
         self._cancel_update = None
         self.async_write_ha_state()
 
-    def turn_on(self, **kwargs) -> None:
+    def turn_on(self, **kwargs: Any) -> None:
         """Activate a 24 hour rain delay on the controller."""
         self._controller.rachio.device.rain_delay(self._controller.controller_id, 86400)
         _LOGGER.debug("Starting rain delay for 24 hours")
 
-    def turn_off(self, **kwargs) -> None:
+    def turn_off(self, **kwargs: Any) -> None:
         """Resume controller functionality."""
         self._controller.rachio.device.rain_delay(self._controller.controller_id, 0)
         _LOGGER.debug("Canceling rain delay")
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         if KEY_RAIN_DELAY in self._controller.init_data:
             self._state = self._controller.init_data[
@@ -416,7 +417,7 @@ class RachioZone(RachioSwitch):
                 props[ATTR_ZONE_SLOPE] = "Steep"
         return props
 
-    def turn_on(self, **kwargs) -> None:
+    def turn_on(self, **kwargs: Any) -> None:
         """Start watering this zone."""
         # Stop other zones first
         self.turn_off()
@@ -436,7 +437,7 @@ class RachioZone(RachioSwitch):
             str(manual_run_time),
         )
 
-    def turn_off(self, **kwargs) -> None:
+    def turn_off(self, **kwargs: Any) -> None:
         """Stop watering all zones."""
         self._controller.stop_watering()
 
@@ -464,7 +465,7 @@ class RachioZone(RachioSwitch):
 
         self.async_write_ha_state()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         self._state = self.zone_id == self._current_schedule.get(KEY_ZONE_ID)
 
@@ -519,7 +520,7 @@ class RachioSchedule(RachioSwitch):
         """Return whether the schedule is allowed to run."""
         return self._schedule_enabled
 
-    def turn_on(self, **kwargs) -> None:
+    def turn_on(self, **kwargs: Any) -> None:
         """Start this schedule."""
         self._controller.rachio.schedulerule.start(self._schedule_id)
         _LOGGER.debug(
@@ -528,7 +529,7 @@ class RachioSchedule(RachioSwitch):
             self._controller.name,
         )
 
-    def turn_off(self, **kwargs) -> None:
+    def turn_off(self, **kwargs: Any) -> None:
         """Stop watering all zones."""
         self._controller.stop_watering()
 
@@ -548,7 +549,7 @@ class RachioSchedule(RachioSwitch):
 
         self.async_write_ha_state()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Subscribe to updates."""
         self._state = self._schedule_id == self._current_schedule.get(KEY_SCHEDULE_ID)
 
diff --git a/homeassistant/components/raincloud/binary_sensor.py b/homeassistant/components/raincloud/binary_sensor.py
index 888529b5c38..b3766cd02cd 100644
--- a/homeassistant/components/raincloud/binary_sensor.py
+++ b/homeassistant/components/raincloud/binary_sensor.py
@@ -58,7 +58,7 @@ class RainCloudBinarySensor(RainCloudEntity, BinarySensorEntity):
         """Return true if the binary sensor is on."""
         return self._state
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data and updates the state."""
         _LOGGER.debug("Updating RainCloud sensor: %s", self._name)
         self._state = getattr(self.data, self._sensor_type)
diff --git a/homeassistant/components/raincloud/sensor.py b/homeassistant/components/raincloud/sensor.py
index b07ccd1e7ac..4d21d36d069 100644
--- a/homeassistant/components/raincloud/sensor.py
+++ b/homeassistant/components/raincloud/sensor.py
@@ -66,7 +66,7 @@ class RainCloudSensor(RainCloudEntity, SensorEntity):
         """Return the units of measurement."""
         return UNIT_OF_MEASUREMENT_MAP.get(self._sensor_type)
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data and updates the states."""
         _LOGGER.debug("Updating RainCloud sensor: %s", self._name)
         if self._sensor_type == "battery":
diff --git a/homeassistant/components/raincloud/switch.py b/homeassistant/components/raincloud/switch.py
index b783a3d9375..89b2673f66e 100644
--- a/homeassistant/components/raincloud/switch.py
+++ b/homeassistant/components/raincloud/switch.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 import voluptuous as vol
 
@@ -68,7 +69,7 @@ class RainCloudSwitch(RainCloudEntity, SwitchEntity):
         """Return true if device is on."""
         return self._state
 
-    def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs: Any) -> None:
         """Turn the device on."""
         if self._sensor_type == "manual_watering":
             self.data.watering_time = self._default_watering_timer
@@ -76,7 +77,7 @@ class RainCloudSwitch(RainCloudEntity, SwitchEntity):
             self.data.auto_watering = True
         self._state = True
 
-    def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs: Any) -> None:
         """Turn the device off."""
         if self._sensor_type == "manual_watering":
             self.data.watering_time = "off"
@@ -84,7 +85,7 @@ class RainCloudSwitch(RainCloudEntity, SwitchEntity):
             self.data.auto_watering = False
         self._state = False
 
-    def update(self):
+    def update(self) -> None:
         """Update device state."""
         _LOGGER.debug("Updating RainCloud switch: %s", self._name)
         if self._sensor_type == "manual_watering":
diff --git a/homeassistant/components/random/binary_sensor.py b/homeassistant/components/random/binary_sensor.py
index 3a53e297d1f..5e688162124 100644
--- a/homeassistant/components/random/binary_sensor.py
+++ b/homeassistant/components/random/binary_sensor.py
@@ -63,7 +63,7 @@ class RandomSensor(BinarySensorEntity):
         """Return the sensor class of the sensor."""
         return self._device_class
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Get new state and update the sensor's state."""
 
         self._state = bool(getrandbits(1))
diff --git a/homeassistant/components/random/sensor.py b/homeassistant/components/random/sensor.py
index a877f5cf0a3..19cf403eab2 100644
--- a/homeassistant/components/random/sensor.py
+++ b/homeassistant/components/random/sensor.py
@@ -87,7 +87,7 @@ class RandomSensor(SensorEntity):
         """Return the attributes of the sensor."""
         return {ATTR_MAXIMUM: self._maximum, ATTR_MINIMUM: self._minimum}
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Get a new number and updates the states."""
 
         self._state = randrange(self._minimum, self._maximum + 1)
diff --git a/homeassistant/components/recswitch/switch.py b/homeassistant/components/recswitch/switch.py
index cc98a922f50..43e71ef1df9 100644
--- a/homeassistant/components/recswitch/switch.py
+++ b/homeassistant/components/recswitch/switch.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 from pyrecswitch import RSNetwork, RSNetworkError
 import voluptuous as vol
@@ -76,11 +77,11 @@ class RecSwitchSwitch(SwitchEntity):
         """Return true if switch is on."""
         return self.gpio_state
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on the switch."""
         await self.async_set_gpio_status(True)
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off the switch."""
         await self.async_set_gpio_status(False)
 
@@ -93,7 +94,7 @@ class RecSwitchSwitch(SwitchEntity):
         except RSNetworkError as error:
             _LOGGER.error("Setting status to %s: %r", self.name, error)
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update the current switch status."""
 
         try:
diff --git a/homeassistant/components/reddit/sensor.py b/homeassistant/components/reddit/sensor.py
index 0f4638634ce..0ae53ca8610 100644
--- a/homeassistant/components/reddit/sensor.py
+++ b/homeassistant/components/reddit/sensor.py
@@ -127,7 +127,7 @@ class RedditSensor(SensorEntity):
         """Return the icon to use in the frontend."""
         return "mdi:reddit"
 
-    def update(self):
+    def update(self) -> None:
         """Update data from Reddit API."""
         self._subreddit_data = []
 
diff --git a/homeassistant/components/rejseplanen/sensor.py b/homeassistant/components/rejseplanen/sensor.py
index a6251bf62e7..6943e7f8aa3 100644
--- a/homeassistant/components/rejseplanen/sensor.py
+++ b/homeassistant/components/rejseplanen/sensor.py
@@ -150,7 +150,7 @@ class RejseplanenTransportSensor(SensorEntity):
         """Icon to use in the frontend, if any."""
         return ICON
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data from rejseplanen.dk and update the states."""
         self.data.update()
         self._times = self.data.info
diff --git a/homeassistant/components/remote_rpi_gpio/binary_sensor.py b/homeassistant/components/remote_rpi_gpio/binary_sensor.py
index 9af1a83b2e9..37994830c4d 100644
--- a/homeassistant/components/remote_rpi_gpio/binary_sensor.py
+++ b/homeassistant/components/remote_rpi_gpio/binary_sensor.py
@@ -75,7 +75,7 @@ class RemoteRPiGPIOBinarySensor(BinarySensorEntity):
         self._state = False
         self._sensor = sensor
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Run when entity about to be added to hass."""
 
         def read_gpio():
@@ -101,7 +101,7 @@ class RemoteRPiGPIOBinarySensor(BinarySensorEntity):
         """Return the class of this sensor, from DEVICE_CLASSES."""
         return
 
-    def update(self):
+    def update(self) -> None:
         """Update the GPIO state."""
         try:
             self._state = remote_rpi_gpio.read_input(self._sensor)
diff --git a/homeassistant/components/remote_rpi_gpio/switch.py b/homeassistant/components/remote_rpi_gpio/switch.py
index 9e7aca37663..862efb0f89d 100644
--- a/homeassistant/components/remote_rpi_gpio/switch.py
+++ b/homeassistant/components/remote_rpi_gpio/switch.py
@@ -1,6 +1,8 @@
 """Allows to configure a switch using RPi GPIO."""
 from __future__ import annotations
 
+from typing import Any
+
 import voluptuous as vol
 
 from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
@@ -75,13 +77,13 @@ class RemoteRPiGPIOSwitch(SwitchEntity):
         """Return true if device is on."""
         return self._state
 
-    def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs: Any) -> None:
         """Turn the device on."""
         remote_rpi_gpio.write_output(self._switch, 1)
         self._state = True
         self.schedule_update_ha_state()
 
-    def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs: Any) -> None:
         """Turn the device off."""
         remote_rpi_gpio.write_output(self._switch, 0)
         self._state = False
diff --git a/homeassistant/components/rest/switch.py b/homeassistant/components/rest/switch.py
index c45eb581645..f2a5d93cd22 100644
--- a/homeassistant/components/rest/switch.py
+++ b/homeassistant/components/rest/switch.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 import asyncio
 from http import HTTPStatus
 import logging
+from typing import Any
 
 import aiohttp
 import async_timeout
@@ -153,7 +154,7 @@ class RestSwitch(TemplateEntity, SwitchEntity):
         """Return true if device is on."""
         return self._state
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the device on."""
         body_on_t = self._body_on.async_render(parse_result=False)
 
@@ -169,7 +170,7 @@ class RestSwitch(TemplateEntity, SwitchEntity):
         except (asyncio.TimeoutError, aiohttp.ClientError):
             _LOGGER.error("Error while switching on %s", self._resource)
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the device off."""
         body_off_t = self._body_off.async_render(parse_result=False)
 
@@ -201,7 +202,7 @@ class RestSwitch(TemplateEntity, SwitchEntity):
             )
             return req
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Get the current state, catching errors."""
         try:
             await self.get_device_state(self.hass)
diff --git a/homeassistant/components/rflink/binary_sensor.py b/homeassistant/components/rflink/binary_sensor.py
index ce723e84b8c..7b095555376 100644
--- a/homeassistant/components/rflink/binary_sensor.py
+++ b/homeassistant/components/rflink/binary_sensor.py
@@ -83,7 +83,7 @@ class RflinkBinarySensor(RflinkDevice, BinarySensorEntity, RestoreEntity):
         self._delay_listener = None
         super().__init__(device_id, **kwargs)
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Restore RFLink BinarySensor state."""
         await super().async_added_to_hass()
         if (old_state := await self.async_get_last_state()) is not None:
diff --git a/homeassistant/components/rflink/sensor.py b/homeassistant/components/rflink/sensor.py
index 5aac1f6debe..2420e933653 100644
--- a/homeassistant/components/rflink/sensor.py
+++ b/homeassistant/components/rflink/sensor.py
@@ -123,7 +123,7 @@ class RflinkSensor(RflinkDevice, SensorEntity):
         """Domain specific event handler."""
         self._state = event["value"]
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register update callback."""
         # Remove temporary bogus entity_id if added
         tmp_entity = TMP_ENTITY.format(self._device_id)
diff --git a/homeassistant/components/rfxtrx/binary_sensor.py b/homeassistant/components/rfxtrx/binary_sensor.py
index 1a0fe698dcf..df79c17263c 100644
--- a/homeassistant/components/rfxtrx/binary_sensor.py
+++ b/homeassistant/components/rfxtrx/binary_sensor.py
@@ -147,7 +147,7 @@ class RfxtrxBinarySensor(RfxtrxEntity, BinarySensorEntity):
         self._cmd_on = cmd_on
         self._cmd_off = cmd_off
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Restore device state."""
         await super().async_added_to_hass()
 
diff --git a/homeassistant/components/rfxtrx/sensor.py b/homeassistant/components/rfxtrx/sensor.py
index 86c3eabc922..c3524b022f8 100644
--- a/homeassistant/components/rfxtrx/sensor.py
+++ b/homeassistant/components/rfxtrx/sensor.py
@@ -284,7 +284,7 @@ class RfxtrxSensor(RfxtrxEntity, SensorEntity):
         self.entity_description = entity_description
         self._attr_unique_id = "_".join(x for x in (*device_id, entity_description.key))
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Restore device state."""
         await super().async_added_to_hass()
 
diff --git a/homeassistant/components/rfxtrx/switch.py b/homeassistant/components/rfxtrx/switch.py
index f164e54b212..c73b0ba3b1d 100644
--- a/homeassistant/components/rfxtrx/switch.py
+++ b/homeassistant/components/rfxtrx/switch.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 import RFXtrx as rfxtrxmod
 
@@ -87,7 +88,7 @@ class RfxtrxSwitch(RfxtrxCommandEntity, SwitchEntity):
         self._cmd_on = cmd_on
         self._cmd_off = cmd_off
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Restore device state."""
         await super().async_added_to_hass()
 
@@ -134,7 +135,7 @@ class RfxtrxSwitch(RfxtrxCommandEntity, SwitchEntity):
 
             self.async_write_ha_state()
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the device on."""
         if self._cmd_on is not None:
             await self._async_send(self._device.send_command, self._cmd_on)
@@ -143,7 +144,7 @@ class RfxtrxSwitch(RfxtrxCommandEntity, SwitchEntity):
         self._attr_is_on = True
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the device off."""
         if self._cmd_off is not None:
             await self._async_send(self._device.send_command, self._cmd_off)
diff --git a/homeassistant/components/ring/binary_sensor.py b/homeassistant/components/ring/binary_sensor.py
index efa92475551..fc47ad7cbf0 100644
--- a/homeassistant/components/ring/binary_sensor.py
+++ b/homeassistant/components/ring/binary_sensor.py
@@ -88,13 +88,13 @@ class RingBinarySensor(RingEntityMixin, BinarySensorEntity):
         self._attr_unique_id = f"{device.id}-{description.key}"
         self._update_alert()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callbacks."""
         await super().async_added_to_hass()
         self.ring_objects["dings_data"].async_add_listener(self._dings_update_callback)
         self._dings_update_callback()
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Disconnect callbacks."""
         await super().async_will_remove_from_hass()
         self.ring_objects["dings_data"].async_remove_listener(
diff --git a/homeassistant/components/ring/camera.py b/homeassistant/components/ring/camera.py
index 5bf440cfcd9..f5d70a86cb3 100644
--- a/homeassistant/components/ring/camera.py
+++ b/homeassistant/components/ring/camera.py
@@ -60,7 +60,7 @@ class RingCam(RingEntityMixin, Camera):
         self._image = None
         self._expires_at = dt_util.utcnow() - FORCE_REFRESH_INTERVAL
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callbacks."""
         await super().async_added_to_hass()
 
@@ -68,7 +68,7 @@ class RingCam(RingEntityMixin, Camera):
             self._device, self._history_update_callback
         )
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Disconnect callbacks."""
         await super().async_will_remove_from_hass()
 
@@ -144,7 +144,7 @@ class RingCam(RingEntityMixin, Camera):
         finally:
             await stream.close()
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update camera entity and refresh attributes."""
         if self._last_event is None:
             return
diff --git a/homeassistant/components/ring/sensor.py b/homeassistant/components/ring/sensor.py
index 26068c149ce..1aaa073064f 100644
--- a/homeassistant/components/ring/sensor.py
+++ b/homeassistant/components/ring/sensor.py
@@ -82,7 +82,7 @@ class RingSensor(RingEntityMixin, SensorEntity):
 class HealthDataRingSensor(RingSensor):
     """Ring sensor that relies on health data."""
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callbacks."""
         await super().async_added_to_hass()
 
@@ -90,7 +90,7 @@ class HealthDataRingSensor(RingSensor):
             self._device, self._health_update_callback
         )
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Disconnect callbacks."""
         await super().async_will_remove_from_hass()
 
@@ -125,7 +125,7 @@ class HistoryRingSensor(RingSensor):
 
     _latest_event = None
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callbacks."""
         await super().async_added_to_hass()
 
@@ -133,7 +133,7 @@ class HistoryRingSensor(RingSensor):
             self._device, self._history_update_callback
         )
 
-    async def async_will_remove_from_hass(self):
+    async def async_will_remove_from_hass(self) -> None:
         """Disconnect callbacks."""
         await super().async_will_remove_from_hass()
 
diff --git a/homeassistant/components/ring/switch.py b/homeassistant/components/ring/switch.py
index 682404e57f9..0fa6e3b1114 100644
--- a/homeassistant/components/ring/switch.py
+++ b/homeassistant/components/ring/switch.py
@@ -1,6 +1,7 @@
 """This component provides HA switch support for Ring Door Bell/Chimes."""
 from datetime import timedelta
 import logging
+from typing import Any
 
 import requests
 
@@ -97,11 +98,11 @@ class SirenSwitch(BaseRingSwitch):
         """If the switch is currently on or off."""
         return self._siren_on
 
-    def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs: Any) -> None:
         """Turn the siren on for 30 seconds."""
         self._set_switch(1)
 
-    def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs: Any) -> None:
         """Turn the siren off."""
         self._set_switch(0)
 
diff --git a/homeassistant/components/ripple/sensor.py b/homeassistant/components/ripple/sensor.py
index cbb72ab8e57..01f326b2a63 100644
--- a/homeassistant/components/ripple/sensor.py
+++ b/homeassistant/components/ripple/sensor.py
@@ -70,7 +70,7 @@ class RippleSensor(SensorEntity):
         """Return the state attributes of the sensor."""
         return {ATTR_ATTRIBUTION: ATTRIBUTION}
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest state of the sensor."""
         if (balance := get_balance(self.address)) is not None:
             self._state = balance
diff --git a/homeassistant/components/rmvtransport/sensor.py b/homeassistant/components/rmvtransport/sensor.py
index 3394c4ef4d3..25f14ae6df3 100644
--- a/homeassistant/components/rmvtransport/sensor.py
+++ b/homeassistant/components/rmvtransport/sensor.py
@@ -186,7 +186,7 @@ class RMVDepartureSensor(SensorEntity):
         """Return the unit this state is expressed in."""
         return TIME_MINUTES
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Get the latest data and update the state."""
         await self.data.async_update()
 
diff --git a/homeassistant/components/roon/media_player.py b/homeassistant/components/roon/media_player.py
index 673316f64a3..58737b30423 100644
--- a/homeassistant/components/roon/media_player.py
+++ b/homeassistant/components/roon/media_player.py
@@ -1,5 +1,8 @@
 """MediaPlayer platform for Roon integration."""
+from __future__ import annotations
+
 import logging
+from typing import Any
 
 from roonapi import split_media_path
 import voluptuous as vol
@@ -8,6 +11,7 @@ from homeassistant.components.media_player import (
     MediaPlayerEntity,
     MediaPlayerEntityFeature,
 )
+from homeassistant.components.media_player.browse_media import BrowseMedia
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     DEVICE_DEFAULT_NAME,
@@ -119,7 +123,7 @@ class RoonDevice(MediaPlayerEntity):
         self._volume_level = 0
         self.update_data(player_data)
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callback."""
         self.async_on_remove(
             async_dispatcher_connect(
@@ -376,38 +380,38 @@ class RoonDevice(MediaPlayerEntity):
         """Boolean if shuffle is enabled."""
         return self._shuffle
 
-    def media_play(self):
+    def media_play(self) -> None:
         """Send play command to device."""
         self._server.roonapi.playback_control(self.output_id, "play")
 
-    def media_pause(self):
+    def media_pause(self) -> None:
         """Send pause command to device."""
         self._server.roonapi.playback_control(self.output_id, "pause")
 
-    def media_play_pause(self):
+    def media_play_pause(self) -> None:
         """Toggle play command to device."""
         self._server.roonapi.playback_control(self.output_id, "playpause")
 
-    def media_stop(self):
+    def media_stop(self) -> None:
         """Send stop command to device."""
         self._server.roonapi.playback_control(self.output_id, "stop")
 
-    def media_next_track(self):
+    def media_next_track(self) -> None:
         """Send next track command to device."""
         self._server.roonapi.playback_control(self.output_id, "next")
 
-    def media_previous_track(self):
+    def media_previous_track(self) -> None:
         """Send previous track command to device."""
         self._server.roonapi.playback_control(self.output_id, "previous")
 
-    def media_seek(self, position):
+    def media_seek(self, position: float) -> None:
         """Send seek command to device."""
         self._server.roonapi.seek(self.output_id, position)
         # Seek doesn't cause an async update - so force one
         self._media_position = position
         self.schedule_update_ha_state()
 
-    def set_volume_level(self, volume):
+    def set_volume_level(self, volume: float) -> None:
         """Send new volume_level to device."""
         volume = int(volume * 100)
         self._server.roonapi.change_volume(self.output_id, volume)
@@ -416,15 +420,15 @@ class RoonDevice(MediaPlayerEntity):
         """Send mute/unmute to device."""
         self._server.roonapi.mute(self.output_id, mute)
 
-    def volume_up(self):
+    def volume_up(self) -> None:
         """Send new volume_level to device."""
         self._server.roonapi.change_volume(self.output_id, 3, "relative")
 
-    def volume_down(self):
+    def volume_down(self) -> None:
         """Send new volume_level to device."""
         self._server.roonapi.change_volume(self.output_id, -3, "relative")
 
-    def turn_on(self):
+    def turn_on(self) -> None:
         """Turn on device (if supported)."""
         if not (self.supports_standby and "source_controls" in self.player_data):
             self.media_play()
@@ -436,7 +440,7 @@ class RoonDevice(MediaPlayerEntity):
                 )
                 return
 
-    def turn_off(self):
+    def turn_off(self) -> None:
         """Turn off device (if supported)."""
         if not (self.supports_standby and "source_controls" in self.player_data):
             self.media_stop()
@@ -447,11 +451,11 @@ class RoonDevice(MediaPlayerEntity):
                 self._server.roonapi.standby(self.output_id, source["control_key"])
                 return
 
-    def set_shuffle(self, shuffle):
+    def set_shuffle(self, shuffle: bool) -> None:
         """Set shuffle state."""
         self._server.roonapi.shuffle(self.output_id, shuffle)
 
-    def play_media(self, media_type, media_id, **kwargs):
+    def play_media(self, media_type: str, media_id: str, **kwargs: Any) -> None:
         """Send the play_media command to the media player."""
 
         _LOGGER.debug("Playback request for %s / %s", media_type, media_id)
@@ -469,7 +473,7 @@ class RoonDevice(MediaPlayerEntity):
                     path_list,
                 )
 
-    def join_players(self, group_members):
+    def join_players(self, group_members: list[str]) -> None:
         """Join `group_members` as a player group with the current player."""
 
         zone_data = self._server.roonapi.zone_by_output_id(self._output_id)
@@ -509,7 +513,7 @@ class RoonDevice(MediaPlayerEntity):
             [self._output_id] + [sync_available[name] for name in names]
         )
 
-    def unjoin_player(self):
+    def unjoin_player(self) -> None:
         """Remove this player from any group."""
 
         if not self._server.roonapi.is_grouped(self._output_id):
@@ -548,7 +552,9 @@ class RoonDevice(MediaPlayerEntity):
             self._server.roonapi.transfer_zone, self._zone_id, transfer_id
         )
 
-    async def async_browse_media(self, media_content_type=None, media_content_id=None):
+    async def async_browse_media(
+        self, media_content_type: str | None = None, media_content_id: str | None = None
+    ) -> BrowseMedia:
         """Implement the websocket media browsing helper."""
         return await self.hass.async_add_executor_job(
             browse_media,
diff --git a/homeassistant/components/rova/sensor.py b/homeassistant/components/rova/sensor.py
index 1057d9b5ea8..26f6d67e697 100644
--- a/homeassistant/components/rova/sensor.py
+++ b/homeassistant/components/rova/sensor.py
@@ -117,7 +117,7 @@ class RovaSensor(SensorEntity):
         self._attr_name = f"{platform_name}_{description.name}"
         self._attr_device_class = SensorDeviceClass.TIMESTAMP
 
-    def update(self):
+    def update(self) -> None:
         """Get the latest data from the sensor and update the state."""
         self.data_service.update()
         pickup_date = self.data_service.data.get(self.entity_description.key)
diff --git a/homeassistant/components/russound_rio/media_player.py b/homeassistant/components/russound_rio/media_player.py
index e905ab0c726..afd96289594 100644
--- a/homeassistant/components/russound_rio/media_player.py
+++ b/homeassistant/components/russound_rio/media_player.py
@@ -115,7 +115,7 @@ class RussoundZoneDevice(MediaPlayerEntity):
         if source_id == current:
             self.schedule_update_ha_state()
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Register callback handlers."""
         self._russ.add_zone_callback(self._zone_callback_handler)
         self._russ.add_source_callback(self._source_callback_handler)
@@ -178,20 +178,20 @@ class RussoundZoneDevice(MediaPlayerEntity):
         """
         return float(self._zone_var("volume", 0)) / 50.0
 
-    async def async_turn_off(self):
+    async def async_turn_off(self) -> None:
         """Turn off the zone."""
         await self._russ.send_zone_event(self._zone_id, "ZoneOff")
 
-    async def async_turn_on(self):
+    async def async_turn_on(self) -> None:
         """Turn on the zone."""
         await self._russ.send_zone_event(self._zone_id, "ZoneOn")
 
-    async def async_set_volume_level(self, volume):
+    async def async_set_volume_level(self, volume: float) -> None:
         """Set the volume level."""
         rvol = int(volume * 50.0)
         await self._russ.send_zone_event(self._zone_id, "KeyPress", "Volume", rvol)
 
-    async def async_select_source(self, source):
+    async def async_select_source(self, source: str) -> None:
         """Select the source input for this zone."""
         for source_id, name in self._sources:
             if name.lower() != source.lower():
diff --git a/homeassistant/components/russound_rnet/media_player.py b/homeassistant/components/russound_rnet/media_player.py
index b97b431333f..6e1074c9837 100644
--- a/homeassistant/components/russound_rnet/media_player.py
+++ b/homeassistant/components/russound_rnet/media_player.py
@@ -90,7 +90,7 @@ class RussoundRNETDevice(MediaPlayerEntity):
         self._volume = None
         self._source = None
 
-    def update(self):
+    def update(self) -> None:
         """Retrieve latest state."""
         # Updated this function to make a single call to get_zone_info, so that
         # with a single call we can get On/Off, Volume and Source, reducing the
@@ -141,7 +141,7 @@ class RussoundRNETDevice(MediaPlayerEntity):
         """
         return self._volume
 
-    def set_volume_level(self, volume):
+    def set_volume_level(self, volume: float) -> None:
         """Set volume level.  Volume has a range (0..1).
 
         Translate this to a range of (0..100) as expected
@@ -149,19 +149,19 @@ class RussoundRNETDevice(MediaPlayerEntity):
         """
         self._russ.set_volume("1", self._zone_id, volume * 100)
 
-    def turn_on(self):
+    def turn_on(self) -> None:
         """Turn the media player on."""
         self._russ.set_power("1", self._zone_id, "1")
 
-    def turn_off(self):
+    def turn_off(self) -> None:
         """Turn off media player."""
         self._russ.set_power("1", self._zone_id, "0")
 
-    def mute_volume(self, mute):
+    def mute_volume(self, mute: bool) -> None:
         """Send mute command."""
         self._russ.toggle_mute("1", self._zone_id)
 
-    def select_source(self, source):
+    def select_source(self, source: str) -> None:
         """Set the input source."""
         if source in self._sources:
             index = self._sources.index(source)