diff --git a/homeassistant/components/lastfm/__init__.py b/homeassistant/components/lastfm/__init__.py
index 8611d06eee1daf..b5a4612429eb10 100644
--- a/homeassistant/components/lastfm/__init__.py
+++ b/homeassistant/components/lastfm/__init__.py
@@ -2,19 +2,18 @@
 
 from __future__ import annotations
 
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 
-from .const import DOMAIN, PLATFORMS
-from .coordinator import LastFMDataUpdateCoordinator
+from .const import PLATFORMS
+from .coordinator import LastFMConfigEntry, LastFMDataUpdateCoordinator
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: LastFMConfigEntry) -> bool:
     """Set up lastfm from a config entry."""
 
     coordinator = LastFMDataUpdateCoordinator(hass, entry)
     await coordinator.async_config_entry_first_refresh()
-    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
+    entry.runtime_data = coordinator
 
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
     entry.async_on_unload(entry.add_update_listener(update_listener))
@@ -22,12 +21,11 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_unload_entry(hass: HomeAssistant, entry: LastFMConfigEntry) -> bool:
     """Unload lastfm config entry."""
-
     return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
 
 
-async def update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
+async def update_listener(hass: HomeAssistant, entry: LastFMConfigEntry) -> None:
     """Handle options update."""
     await hass.config_entries.async_reload(entry.entry_id)
diff --git a/homeassistant/components/lastfm/config_flow.py b/homeassistant/components/lastfm/config_flow.py
index ca40aebd0d4785..422c50a5fb9774 100644
--- a/homeassistant/components/lastfm/config_flow.py
+++ b/homeassistant/components/lastfm/config_flow.py
@@ -8,12 +8,7 @@
 from pylast import LastFMNetwork, PyLastError, User, WSError
 import voluptuous as vol
 
-from homeassistant.config_entries import (
-    ConfigEntry,
-    ConfigFlow,
-    ConfigFlowResult,
-    OptionsFlow,
-)
+from homeassistant.config_entries import ConfigFlow, ConfigFlowResult, OptionsFlow
 from homeassistant.const import CONF_API_KEY
 from homeassistant.core import callback
 from homeassistant.helpers.selector import (
@@ -23,6 +18,7 @@
 )
 
 from .const import CONF_MAIN_USER, CONF_USERS, DOMAIN
+from .coordinator import LastFMConfigEntry
 
 PLACEHOLDERS = {"api_account_url": "https://www.last.fm/api/account/create"}
 
@@ -81,7 +77,7 @@ class LastFmConfigFlowHandler(ConfigFlow, domain=DOMAIN):
     @staticmethod
     @callback
     def async_get_options_flow(
-        config_entry: ConfigEntry,
+        config_entry: LastFMConfigEntry,
     ) -> LastFmOptionsFlowHandler:
         """Get the options flow for this handler."""
         return LastFmOptionsFlowHandler()
@@ -162,6 +158,8 @@ async def async_step_friends(
 class LastFmOptionsFlowHandler(OptionsFlow):
     """LastFm Options flow handler."""
 
+    config_entry: LastFMConfigEntry
+
     async def async_step_init(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
diff --git a/homeassistant/components/lastfm/coordinator.py b/homeassistant/components/lastfm/coordinator.py
index ae89e103b80c98..ca3c7eda5087c9 100644
--- a/homeassistant/components/lastfm/coordinator.py
+++ b/homeassistant/components/lastfm/coordinator.py
@@ -14,6 +14,8 @@
 
 from .const import CONF_USERS, DOMAIN, LOGGER
 
+type LastFMConfigEntry = ConfigEntry[LastFMDataUpdateCoordinator]
+
 
 def format_track(track: Track | None) -> str | None:
     """Format the track."""
diff --git a/homeassistant/components/lastfm/sensor.py b/homeassistant/components/lastfm/sensor.py
index 89025583e92a16..0f4d22ba503dd0 100644
--- a/homeassistant/components/lastfm/sensor.py
+++ b/homeassistant/components/lastfm/sensor.py
@@ -6,7 +6,6 @@
 from typing import Any
 
 from homeassistant.components.sensor import SensorEntity
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceEntryType, DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
@@ -21,17 +20,17 @@
     DOMAIN,
     STATE_NOT_SCROBBLING,
 )
-from .coordinator import LastFMDataUpdateCoordinator, LastFMUserData
+from .coordinator import LastFMConfigEntry, LastFMDataUpdateCoordinator, LastFMUserData
 
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: LastFMConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Initialize the entries."""
 
-    coordinator: LastFMDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+    coordinator = entry.runtime_data
     async_add_entities(
         (
             LastFmSensor(coordinator, username, entry.entry_id)
diff --git a/homeassistant/components/rachio/calendar.py b/homeassistant/components/rachio/calendar.py
index 18b1b6a4d8fae7..a8b593e1138bcc 100644
--- a/homeassistant/components/rachio/calendar.py
+++ b/homeassistant/components/rachio/calendar.py
@@ -16,10 +16,8 @@
 from homeassistant.util import dt as dt_util
 
 from .const import (
-    KEY_ADDRESS,
     KEY_DURATION_SECONDS,
     KEY_ID,
-    KEY_LOCALITY,
     KEY_PROGRAM_ID,
     KEY_PROGRAM_NAME,
     KEY_RUN_SUMMARIES,
@@ -65,7 +63,6 @@ def __init__(
         super().__init__(coordinator)
         self.base_station = base_station
         self._event: CalendarEvent | None = None
-        self._location = coordinator.base_station[KEY_ADDRESS][KEY_LOCALITY]
         self._attr_translation_placeholders = {
             "base": coordinator.base_station[KEY_SERIAL_NUMBER]
         }
@@ -87,7 +84,6 @@ def event(self) -> CalendarEvent | None:
             end=dt_util.as_local(start_time)
             + timedelta(seconds=int(event[KEY_TOTAL_RUN_DURATION])),
             description=valves,
-            location=self._location,
         )
 
     def _handle_upcoming_event(self) -> dict[str, Any] | None:
@@ -155,7 +151,6 @@ async def async_get_events(
                     start=event_start,
                     end=event_end,
                     description=valves,
-                    location=self._location,
                     uid=f"{run[KEY_PROGRAM_ID]}/{run[KEY_START_TIME]}",
                 )
                 event_list.append(event)
diff --git a/homeassistant/components/rachio/const.py b/homeassistant/components/rachio/const.py
index 08a09f309f64de..64b26526f57aa2 100644
--- a/homeassistant/components/rachio/const.py
+++ b/homeassistant/components/rachio/const.py
@@ -75,8 +75,6 @@
 KEY_PROGRAM_NAME = "programName"
 KEY_PROGRAM_RUN_SUMMARIES = "valveProgramRunSummaries"
 KEY_TOTAL_RUN_DURATION = "totalRunDurationSeconds"
-KEY_ADDRESS = "address"
-KEY_LOCALITY = "locality"
 KEY_SKIP = "skip"
 KEY_SKIPPABLE = "skippable"
 
diff --git a/homeassistant/components/russound_rio/__init__.py b/homeassistant/components/russound_rio/__init__.py
index 51ca9a9b1eafb1..ddaa83632df773 100644
--- a/homeassistant/components/russound_rio/__init__.py
+++ b/homeassistant/components/russound_rio/__init__.py
@@ -14,7 +14,7 @@
 
 from .const import DOMAIN, RUSSOUND_RIO_EXCEPTIONS
 
-PLATFORMS = [Platform.MEDIA_PLAYER, Platform.NUMBER]
+PLATFORMS = [Platform.MEDIA_PLAYER, Platform.NUMBER, Platform.SWITCH]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/russound_rio/icons.json b/homeassistant/components/russound_rio/icons.json
new file mode 100644
index 00000000000000..7d4ddc4cf98d2a
--- /dev/null
+++ b/homeassistant/components/russound_rio/icons.json
@@ -0,0 +1,12 @@
+{
+  "entity": {
+    "switch": {
+      "loudness": {
+        "default": "mdi:volume-high",
+        "state": {
+          "off": "mdi:volume-low"
+        }
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/russound_rio/strings.json b/homeassistant/components/russound_rio/strings.json
index 37f78bfa75d1eb..aa9a1cbc65da0c 100644
--- a/homeassistant/components/russound_rio/strings.json
+++ b/homeassistant/components/russound_rio/strings.json
@@ -54,6 +54,11 @@
       "turn_on_volume": {
         "name": "Turn-on volume"
       }
+    },
+    "switch": {
+      "loudness": {
+        "name": "Loudness"
+      }
     }
   },
   "exceptions": {
diff --git a/homeassistant/components/russound_rio/switch.py b/homeassistant/components/russound_rio/switch.py
new file mode 100644
index 00000000000000..20ee82ebb5bc63
--- /dev/null
+++ b/homeassistant/components/russound_rio/switch.py
@@ -0,0 +1,85 @@
+"""Support for Russound RIO switch entities."""
+
+from collections.abc import Awaitable, Callable
+from dataclasses import dataclass
+from typing import Any
+
+from aiorussound.rio import Controller, ZoneControlSurface
+
+from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+
+from . import RussoundConfigEntry
+from .entity import RussoundBaseEntity, command
+
+PARALLEL_UPDATES = 0
+
+
+@dataclass(frozen=True, kw_only=True)
+class RussoundZoneSwitchEntityDescription(SwitchEntityDescription):
+    """Describes Russound RIO switch entity description."""
+
+    value_fn: Callable[[ZoneControlSurface], bool]
+    set_value_fn: Callable[[ZoneControlSurface, bool], Awaitable[None]]
+
+
+CONTROL_ENTITIES: tuple[RussoundZoneSwitchEntityDescription, ...] = (
+    RussoundZoneSwitchEntityDescription(
+        key="loudness",
+        translation_key="loudness",
+        entity_category=EntityCategory.CONFIG,
+        value_fn=lambda zone: zone.loudness,
+        set_value_fn=lambda zone, value: zone.set_loudness(value),
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: RussoundConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up Russound RIO switch entities based on a config entry."""
+    client = entry.runtime_data
+    async_add_entities(
+        RussoundSwitchEntity(controller, zone_id, description)
+        for controller in client.controllers.values()
+        for zone_id in controller.zones
+        for description in CONTROL_ENTITIES
+    )
+
+
+class RussoundSwitchEntity(RussoundBaseEntity, SwitchEntity):
+    """Defines a Russound RIO switch entity."""
+
+    entity_description: RussoundZoneSwitchEntityDescription
+
+    def __init__(
+        self,
+        controller: Controller,
+        zone_id: int,
+        description: RussoundZoneSwitchEntityDescription,
+    ) -> None:
+        """Initialize Russound RIO switch."""
+        super().__init__(controller, zone_id)
+        self.entity_description = description
+        self._attr_unique_id = (
+            f"{self._primary_mac_address}-{self._zone.device_str}-{description.key}"
+        )
+
+    @property
+    def is_on(self) -> bool:
+        """Return the state of the switch."""
+        return self.entity_description.value_fn(self._zone)
+
+    @command
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Turn the switch on."""
+        await self.entity_description.set_value_fn(self._zone, True)
+
+    @command
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn the switch off."""
+        await self.entity_description.set_value_fn(self._zone, False)
diff --git a/homeassistant/components/unifi/button.py b/homeassistant/components/unifi/button.py
index 3e5ef62f49e26c..470f0091fffd2d 100644
--- a/homeassistant/components/unifi/button.py
+++ b/homeassistant/components/unifi/button.py
@@ -11,11 +11,11 @@
 from typing import TYPE_CHECKING, Any
 
 import aiounifi
-from aiounifi.interfaces.api_handlers import ItemEvent
+from aiounifi.interfaces.api_handlers import APIHandler, ItemEvent
 from aiounifi.interfaces.devices import Devices
 from aiounifi.interfaces.ports import Ports
 from aiounifi.interfaces.wlans import Wlans
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.device import (
     Device,
     DevicePowerCyclePortRequest,
@@ -35,7 +35,6 @@
 
 from . import UnifiConfigEntry
 from .entity import (
-    HandlerT,
     UnifiEntity,
     UnifiEntityDescription,
     async_device_available_fn,
@@ -81,7 +80,7 @@ async def async_regenerate_password_control_fn(
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiButtonEntityDescription(
+class UnifiButtonEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
     ButtonEntityDescription, UnifiEntityDescription[HandlerT, ApiItemT]
 ):
     """Class describing UniFi button entity."""
@@ -143,7 +142,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiButtonEntity(UnifiEntity[HandlerT, ApiItemT], ButtonEntity):
+class UnifiButtonEntity[HandlerT: APIHandler, ApiItemT: ApiItem](
+    UnifiEntity[HandlerT, ApiItemT], ButtonEntity
+):
     """Base representation of a UniFi button."""
 
     entity_description: UnifiButtonEntityDescription[HandlerT, ApiItemT]
diff --git a/homeassistant/components/unifi/device_tracker.py b/homeassistant/components/unifi/device_tracker.py
index 1084c29e75f11d..8d82c7334c6aad 100644
--- a/homeassistant/components/unifi/device_tracker.py
+++ b/homeassistant/components/unifi/device_tracker.py
@@ -9,10 +9,10 @@
 from typing import Any
 
 import aiounifi
-from aiounifi.interfaces.api_handlers import ItemEvent
+from aiounifi.interfaces.api_handlers import APIHandler, ItemEvent
 from aiounifi.interfaces.clients import Clients
 from aiounifi.interfaces.devices import Devices
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.client import Client
 from aiounifi.models.device import Device
 from aiounifi.models.event import Event, EventKey
@@ -31,12 +31,7 @@
 
 from . import UnifiConfigEntry
 from .const import DOMAIN
-from .entity import (
-    HandlerT,
-    UnifiEntity,
-    UnifiEntityDescription,
-    async_device_available_fn,
-)
+from .entity import UnifiEntity, UnifiEntityDescription, async_device_available_fn
 from .hub import UnifiHub
 
 LOGGER = logging.getLogger(__name__)
@@ -142,7 +137,7 @@ def async_device_heartbeat_timedelta_fn(hub: UnifiHub, obj_id: str) -> timedelta
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiTrackerEntityDescription(
+class UnifiTrackerEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
     UnifiEntityDescription[HandlerT, ApiItemT], ScannerEntityDescription
 ):
     """Class describing UniFi device tracker entity."""
@@ -229,7 +224,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiScannerEntity(UnifiEntity[HandlerT, ApiItemT], ScannerEntity):
+class UnifiScannerEntity[HandlerT: APIHandler, ApiItemT: ApiItem](
+    UnifiEntity[HandlerT, ApiItemT], ScannerEntity
+):
     """Representation of a UniFi scanner."""
 
     entity_description: UnifiTrackerEntityDescription
diff --git a/homeassistant/components/unifi/entity.py b/homeassistant/components/unifi/entity.py
index 1f9d5b304bcb4c..4b68287ce10f0f 100644
--- a/homeassistant/components/unifi/entity.py
+++ b/homeassistant/components/unifi/entity.py
@@ -5,7 +5,7 @@
 from abc import abstractmethod
 from collections.abc import Callable
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, Generic, TypeVar
+from typing import TYPE_CHECKING
 
 import aiounifi
 from aiounifi.interfaces.api_handlers import (
@@ -14,7 +14,7 @@
     ItemEvent,
     UnsubscribeType,
 )
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.event import Event, EventKey
 
 from homeassistant.core import callback
@@ -32,8 +32,7 @@
 if TYPE_CHECKING:
     from .hub import UnifiHub
 
-HandlerT = TypeVar("HandlerT", bound=APIHandler)
-SubscriptionT = Callable[[CallbackType, ItemEvent], UnsubscribeType]
+type SubscriptionType = Callable[[CallbackType, ItemEvent], UnsubscribeType]
 
 
 @callback
@@ -95,7 +94,9 @@ def async_client_device_info_fn(hub: UnifiHub, obj_id: str) -> DeviceInfo:
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiEntityDescription(EntityDescription, Generic[HandlerT, ApiItemT]):
+class UnifiEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
+    EntityDescription
+):
     """UniFi Entity Description."""
 
     api_handler_fn: Callable[[aiounifi.Controller], HandlerT]
@@ -128,7 +129,7 @@ class UnifiEntityDescription(EntityDescription, Generic[HandlerT, ApiItemT]):
     """If entity needs to do regular checks on state."""
 
 
-class UnifiEntity(Entity, Generic[HandlerT, ApiItemT]):
+class UnifiEntity[HandlerT: APIHandler, ApiItemT: ApiItem](Entity):
     """Representation of a UniFi entity."""
 
     entity_description: UnifiEntityDescription[HandlerT, ApiItemT]
diff --git a/homeassistant/components/unifi/image.py b/homeassistant/components/unifi/image.py
index f3045d5fc1c350..842e9732b5e833 100644
--- a/homeassistant/components/unifi/image.py
+++ b/homeassistant/components/unifi/image.py
@@ -8,9 +8,9 @@
 from collections.abc import Callable
 from dataclasses import dataclass
 
-from aiounifi.interfaces.api_handlers import ItemEvent
+from aiounifi.interfaces.api_handlers import APIHandler, ItemEvent
 from aiounifi.interfaces.wlans import Wlans
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.wlan import Wlan
 
 from homeassistant.components.image import ImageEntity, ImageEntityDescription
@@ -21,7 +21,6 @@
 
 from . import UnifiConfigEntry
 from .entity import (
-    HandlerT,
     UnifiEntity,
     UnifiEntityDescription,
     async_wlan_available_fn,
@@ -37,7 +36,7 @@ def async_wlan_qr_code_image_fn(hub: UnifiHub, wlan: Wlan) -> bytes:
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiImageEntityDescription(
+class UnifiImageEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
     ImageEntityDescription, UnifiEntityDescription[HandlerT, ApiItemT]
 ):
     """Class describing UniFi image entity."""
@@ -75,7 +74,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiImageEntity(UnifiEntity[HandlerT, ApiItemT], ImageEntity):
+class UnifiImageEntity[HandlerT: APIHandler, ApiItemT: ApiItem](
+    UnifiEntity[HandlerT, ApiItemT], ImageEntity
+):
     """Base representation of a UniFi image."""
 
     entity_description: UnifiImageEntityDescription[HandlerT, ApiItemT]
diff --git a/homeassistant/components/unifi/sensor.py b/homeassistant/components/unifi/sensor.py
index 47a2c2ba62e2b0..f91a8797d5e6ae 100644
--- a/homeassistant/components/unifi/sensor.py
+++ b/homeassistant/components/unifi/sensor.py
@@ -13,13 +13,13 @@
 from functools import partial
 from typing import TYPE_CHECKING, Literal
 
-from aiounifi.interfaces.api_handlers import ItemEvent
+from aiounifi.interfaces.api_handlers import APIHandler, ItemEvent
 from aiounifi.interfaces.clients import Clients
 from aiounifi.interfaces.devices import Devices
 from aiounifi.interfaces.outlets import Outlets
 from aiounifi.interfaces.ports import Ports
 from aiounifi.interfaces.wlans import Wlans
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.client import Client
 from aiounifi.models.device import (
     Device,
@@ -53,7 +53,6 @@
 from . import UnifiConfigEntry
 from .const import DEVICE_STATES
 from .entity import (
-    HandlerT,
     UnifiEntity,
     UnifiEntityDescription,
     async_client_device_info_fn,
@@ -356,7 +355,7 @@ def make_device_temperature_entity_description(
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiSensorEntityDescription(
+class UnifiSensorEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
     SensorEntityDescription, UnifiEntityDescription[HandlerT, ApiItemT]
 ):
     """Class describing UniFi sensor entity."""
@@ -652,7 +651,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiSensorEntity(UnifiEntity[HandlerT, ApiItemT], SensorEntity):
+class UnifiSensorEntity[HandlerT: APIHandler, ApiItemT: ApiItem](
+    UnifiEntity[HandlerT, ApiItemT], SensorEntity
+):
     """Base representation of a UniFi sensor."""
 
     entity_description: UnifiSensorEntityDescription[HandlerT, ApiItemT]
diff --git a/homeassistant/components/unifi/switch.py b/homeassistant/components/unifi/switch.py
index 95c7736e0d7e9e..1ca409bec774b3 100644
--- a/homeassistant/components/unifi/switch.py
+++ b/homeassistant/components/unifi/switch.py
@@ -15,7 +15,7 @@
 from typing import TYPE_CHECKING, Any
 
 import aiounifi
-from aiounifi.interfaces.api_handlers import ItemEvent
+from aiounifi.interfaces.api_handlers import APIHandler, ItemEvent
 from aiounifi.interfaces.clients import Clients
 from aiounifi.interfaces.dpi_restriction_groups import DPIRestrictionGroups
 from aiounifi.interfaces.firewall_policies import FirewallPolicies
@@ -25,7 +25,7 @@
 from aiounifi.interfaces.traffic_routes import TrafficRoutes
 from aiounifi.interfaces.traffic_rules import TrafficRules
 from aiounifi.interfaces.wlans import Wlans
-from aiounifi.models.api import ApiItemT
+from aiounifi.models.api import ApiItem
 from aiounifi.models.client import Client, ClientBlockRequest
 from aiounifi.models.device import DeviceSetOutletRelayRequest
 from aiounifi.models.dpi_restriction_app import DPIRestrictionAppEnableRequest
@@ -54,8 +54,7 @@
 from . import UnifiConfigEntry
 from .const import ATTR_MANUFACTURER, DOMAIN
 from .entity import (
-    HandlerT,
-    SubscriptionT,
+    SubscriptionType,
     UnifiEntity,
     UnifiEntityDescription,
     async_client_device_info_fn,
@@ -209,7 +208,7 @@ async def async_wlan_control_fn(hub: UnifiHub, obj_id: str, target: bool) -> Non
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiSwitchEntityDescription(
+class UnifiSwitchEntityDescription[HandlerT: APIHandler, ApiItemT: ApiItem](
     SwitchEntityDescription, UnifiEntityDescription[HandlerT, ApiItemT]
 ):
     """Class describing UniFi switch entity."""
@@ -218,7 +217,7 @@ class UnifiSwitchEntityDescription(
     is_on_fn: Callable[[UnifiHub, ApiItemT], bool]
 
     # Optional
-    custom_subscribe: Callable[[aiounifi.Controller], SubscriptionT] | None = None
+    custom_subscribe: Callable[[aiounifi.Controller], SubscriptionType] | None = None
     """Callback for additional subscriptions to any UniFi handler."""
     only_event_for_state_change: bool = False
     """Use only UniFi events to trigger state changes."""
@@ -397,7 +396,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiSwitchEntity(UnifiEntity[HandlerT, ApiItemT], SwitchEntity):
+class UnifiSwitchEntity[HandlerT: APIHandler, ApiItemT: ApiItem](
+    UnifiEntity[HandlerT, ApiItemT], SwitchEntity
+):
     """Base representation of a UniFi switch."""
 
     entity_description: UnifiSwitchEntityDescription[HandlerT, ApiItemT]
diff --git a/homeassistant/components/unifi/update.py b/homeassistant/components/unifi/update.py
index 589b2ff1215e15..a53700ef969086 100644
--- a/homeassistant/components/unifi/update.py
+++ b/homeassistant/components/unifi/update.py
@@ -5,7 +5,7 @@
 from collections.abc import Callable, Coroutine
 from dataclasses import dataclass
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 import aiounifi
 from aiounifi.interfaces.api_handlers import ItemEvent
@@ -31,9 +31,6 @@
 
 LOGGER = logging.getLogger(__name__)
 
-_DataT = TypeVar("_DataT", bound=Device)
-_HandlerT = TypeVar("_HandlerT", bound=Devices)
-
 
 async def async_device_control_fn(api: aiounifi.Controller, obj_id: str) -> None:
     """Control upgrade of device."""
@@ -41,7 +38,7 @@ async def async_device_control_fn(api: aiounifi.Controller, obj_id: str) -> None
 
 
 @dataclass(frozen=True, kw_only=True)
-class UnifiUpdateEntityDescription(
+class UnifiUpdateEntityDescription[_HandlerT: Devices, _DataT: Device](
     UpdateEntityDescription, UnifiEntityDescription[_HandlerT, _DataT]
 ):
     """Class describing UniFi update entity."""
@@ -78,7 +75,9 @@ async def async_setup_entry(
     )
 
 
-class UnifiDeviceUpdateEntity(UnifiEntity[_HandlerT, _DataT], UpdateEntity):
+class UnifiDeviceUpdateEntity[_HandlerT: Devices, _DataT: Device](
+    UnifiEntity[_HandlerT, _DataT], UpdateEntity
+):
     """Representation of a UniFi device update entity."""
 
     entity_description: UnifiUpdateEntityDescription[_HandlerT, _DataT]
diff --git a/tests/components/russound_rio/conftest.py b/tests/components/russound_rio/conftest.py
index 5e57c45193b8a0..81091e1d5a8a55 100644
--- a/tests/components/russound_rio/conftest.py
+++ b/tests/components/russound_rio/conftest.py
@@ -83,6 +83,7 @@ def mock_russound_client() -> Generator[AsyncMock]:
                 zone.set_bass = AsyncMock()
                 zone.set_treble = AsyncMock()
                 zone.set_turn_on_volume = AsyncMock()
+                zone.set_loudness = AsyncMock()
 
         client.controllers = {
             1: Controller(
diff --git a/tests/components/russound_rio/snapshots/test_switch.ambr b/tests/components/russound_rio/snapshots/test_switch.ambr
new file mode 100644
index 00000000000000..38273b8233bf5f
--- /dev/null
+++ b/tests/components/russound_rio/snapshots/test_switch.ambr
@@ -0,0 +1,193 @@
+# serializer version: 1
+# name: test_all_entities[switch.backyard_loudness-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'switch.backyard_loudness',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Loudness',
+    'platform': 'russound_rio',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'loudness',
+    'unique_id': '00:11:22:33:44:55-C[1].Z[1]-loudness',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[switch.backyard_loudness-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Backyard Loudness',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.backyard_loudness',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
+# name: test_all_entities[switch.bedroom_loudness-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'switch.bedroom_loudness',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Loudness',
+    'platform': 'russound_rio',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'loudness',
+    'unique_id': '00:11:22:33:44:55-C[1].Z[3]-loudness',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[switch.bedroom_loudness-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Bedroom Loudness',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.bedroom_loudness',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
+# name: test_all_entities[switch.kitchen_loudness-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'switch.kitchen_loudness',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Loudness',
+    'platform': 'russound_rio',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'loudness',
+    'unique_id': '00:11:22:33:44:55-C[1].Z[2]-loudness',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[switch.kitchen_loudness-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Kitchen Loudness',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.kitchen_loudness',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
+# name: test_all_entities[switch.living_room_loudness-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'switch.living_room_loudness',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Loudness',
+    'platform': 'russound_rio',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'loudness',
+    'unique_id': '00:11:22:33:44:55-C[2].Z[9]-loudness',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[switch.living_room_loudness-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Living Room Loudness',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.living_room_loudness',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'off',
+  })
+# ---
diff --git a/tests/components/russound_rio/test_switch.py b/tests/components/russound_rio/test_switch.py
new file mode 100644
index 00000000000000..dadaae1df33ea4
--- /dev/null
+++ b/tests/components/russound_rio/test_switch.py
@@ -0,0 +1,64 @@
+"""Tests for the Russound RIO switch platform."""
+
+from unittest.mock import AsyncMock, patch
+
+import pytest
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN, SERVICE_TURN_ON
+from homeassistant.const import ATTR_ENTITY_ID, SERVICE_TURN_OFF, Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from . import setup_integration
+
+from tests.common import MockConfigEntry, snapshot_platform
+
+
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_all_entities(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    mock_russound_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    entity_registry: er.EntityRegistry,
+) -> None:
+    """Test all entities."""
+    with patch("homeassistant.components.russound_rio.PLATFORMS", [Platform.SWITCH]):
+        await setup_integration(hass, mock_config_entry)
+
+    await snapshot_platform(hass, entity_registry, snapshot, mock_config_entry.entry_id)
+
+
+async def test_setting_value(
+    hass: HomeAssistant,
+    mock_russound_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test setting value."""
+    await setup_integration(hass, mock_config_entry)
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_ON,
+        {
+            ATTR_ENTITY_ID: "switch.backyard_loudness",
+        },
+        blocking=True,
+    )
+    mock_russound_client.controllers[1].zones[1].set_loudness.assert_called_once_with(
+        True
+    )
+    mock_russound_client.controllers[1].zones[1].set_loudness.reset_mock()
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_OFF,
+        {
+            ATTR_ENTITY_ID: "switch.backyard_loudness",
+        },
+        blocking=True,
+    )
+    mock_russound_client.controllers[1].zones[1].set_loudness.assert_called_once_with(
+        False
+    )