diff --git a/homeassistant/components/august/binary_sensor.py b/homeassistant/components/august/binary_sensor.py
index 8671032f32d..81d84965d58 100644
--- a/homeassistant/components/august/binary_sensor.py
+++ b/homeassistant/components/august/binary_sensor.py
@@ -210,8 +210,6 @@ class AugustDoorBinarySensor(AugustEntityMixin, BinarySensorEntity):
         """Initialize the sensor."""
         super().__init__(data, device)
         self.entity_description = description
-        self._data = data
-        self._device = device
         self._attr_unique_id = f"{self._device_id}_{description.key}"
 
     @callback
@@ -273,22 +271,21 @@ class AugustDoorbellBinarySensor(AugustEntityMixin, BinarySensorEntity):
         else:
             self._attr_available = True
 
+    @callback
+    def _async_scheduled_update(self, now: datetime) -> None:
+        """Timer callback for sensor update."""
+        self._check_for_off_update_listener = None
+        self._update_from_data()
+        if not self.is_on:
+            self.async_write_ha_state()
+
     def _schedule_update_to_recheck_turn_off_sensor(self) -> None:
         """Schedule an update to recheck the sensor to see if it is ready to turn off."""
         # If the sensor is already off there is nothing to do
         if not self.is_on:
             return
-
-        @callback
-        def _scheduled_update(now: datetime) -> None:
-            """Timer callback for sensor update."""
-            self._check_for_off_update_listener = None
-            self._update_from_data()
-            if not self.is_on:
-                self.async_write_ha_state()
-
         self._check_for_off_update_listener = async_call_later(
-            self.hass, TIME_TO_RECHECK_DETECTION.total_seconds(), _scheduled_update
+            self.hass, TIME_TO_RECHECK_DETECTION, self._async_scheduled_update
         )
 
     def _cancel_any_pending_updates(self) -> None:
diff --git a/homeassistant/components/august/camera.py b/homeassistant/components/august/camera.py
index 4c56502e6c7..76ccf9fa4dd 100644
--- a/homeassistant/components/august/camera.py
+++ b/homeassistant/components/august/camera.py
@@ -43,6 +43,8 @@ class AugustCamera(AugustEntityMixin, Camera):
     """An implementation of an August security camera."""
 
     _attr_translation_key = "camera"
+    _attr_motion_detection_enabled = True
+    _attr_brand = DEFAULT_NAME
 
     def __init__(
         self, data: AugustData, device: Doorbell, session: ClientSession, timeout: int
@@ -55,8 +57,6 @@ class AugustCamera(AugustEntityMixin, Camera):
         self._content_token = None
         self._image_content = None
         self._attr_unique_id = f"{self._device_id:s}_camera"
-        self._attr_motion_detection_enabled = True
-        self._attr_brand = DEFAULT_NAME
 
     @property
     def is_recording(self) -> bool:
diff --git a/homeassistant/components/august/lock.py b/homeassistant/components/august/lock.py
index 1817319d823..47b1be52184 100644
--- a/homeassistant/components/august/lock.py
+++ b/homeassistant/components/august/lock.py
@@ -40,11 +40,11 @@ class AugustLock(AugustEntityMixin, RestoreEntity, LockEntity):
     """Representation of an August lock."""
 
     _attr_name = None
+    _lock_status: LockStatus | None = None
 
     def __init__(self, data: AugustData, device: Lock) -> None:
         """Initialize the lock."""
         super().__init__(data, device)
-        self._lock_status = None
         self._attr_unique_id = f"{self._device_id:s}_lock"
         if self._detail.unlatch_supported:
             self._attr_supported_features = LockEntityFeature.OPEN
@@ -136,14 +136,15 @@ class AugustLock(AugustEntityMixin, RestoreEntity, LockEntity):
             update_lock_detail_from_activity(self._detail, bridge_activity)
 
         self._update_lock_status_from_detail()
-        if self._lock_status is None or self._lock_status is LockStatus.UNKNOWN:
+        lock_status = self._lock_status
+        if lock_status is None or lock_status is LockStatus.UNKNOWN:
             self._attr_is_locked = None
         else:
-            self._attr_is_locked = self._lock_status is LockStatus.LOCKED
+            self._attr_is_locked = lock_status is LockStatus.LOCKED
 
-        self._attr_is_jammed = self._lock_status is LockStatus.JAMMED
-        self._attr_is_locking = self._lock_status is LockStatus.LOCKING
-        self._attr_is_unlocking = self._lock_status in (
+        self._attr_is_jammed = lock_status is LockStatus.JAMMED
+        self._attr_is_locking = lock_status is LockStatus.LOCKING
+        self._attr_is_unlocking = lock_status in (
             LockStatus.UNLOCKING,
             LockStatus.UNLATCHING,
         )
diff --git a/homeassistant/components/august/sensor.py b/homeassistant/components/august/sensor.py
index c1dc6620f81..8ad32df3c08 100644
--- a/homeassistant/components/august/sensor.py
+++ b/homeassistant/components/august/sensor.py
@@ -26,7 +26,6 @@ from homeassistant.const import (
     EntityCategory,
 )
 from homeassistant.core import HomeAssistant, callback
-from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import AugustConfigEntry, AugustData
@@ -37,7 +36,6 @@ from .const import (
     ATTR_OPERATION_METHOD,
     ATTR_OPERATION_REMOTE,
     ATTR_OPERATION_TAG,
-    DOMAIN,
     OPERATION_METHOD_AUTORELOCK,
     OPERATION_METHOD_KEYPAD,
     OPERATION_METHOD_MANUAL,
@@ -100,7 +98,6 @@ async def async_setup_entry(
     """Set up the August sensors."""
     data = config_entry.runtime_data
     entities: list[SensorEntity] = []
-    migrate_unique_id_devices = []
     operation_sensors = []
     batteries: dict[str, list[Doorbell | Lock]] = {
         "device_battery": [],
@@ -126,9 +123,7 @@ async def async_setup_entry(
             device.device_name,
         )
         entities.append(
-            AugustBatterySensor[LockDetail](
-                data, device, device, SENSOR_TYPE_DEVICE_BATTERY
-            )
+            AugustBatterySensor[LockDetail](data, device, SENSOR_TYPE_DEVICE_BATTERY)
         )
 
     for device in batteries["linked_keypad_battery"]:
@@ -145,34 +140,15 @@ async def async_setup_entry(
             device.device_name,
         )
         keypad_battery_sensor = AugustBatterySensor[KeypadDetail](
-            data, detail.keypad, device, SENSOR_TYPE_KEYPAD_BATTERY
+            data, detail.keypad, SENSOR_TYPE_KEYPAD_BATTERY
         )
         entities.append(keypad_battery_sensor)
-        migrate_unique_id_devices.append(keypad_battery_sensor)
 
     entities.extend(AugustOperatorSensor(data, device) for device in operation_sensors)
 
-    await _async_migrate_old_unique_ids(hass, migrate_unique_id_devices)
-
     async_add_entities(entities)
 
 
-async def _async_migrate_old_unique_ids(hass: HomeAssistant, devices) -> None:
-    """Keypads now have their own serial number."""
-    registry = er.async_get(hass)
-    for device in devices:
-        old_entity_id = registry.async_get_entity_id(
-            "sensor", DOMAIN, device.old_unique_id
-        )
-        if old_entity_id is not None:
-            _LOGGER.debug(
-                "Migrating unique_id from [%s] to [%s]",
-                device.old_unique_id,
-                device.unique_id,
-            )
-            registry.async_update_entity(old_entity_id, new_unique_id=device.unique_id)
-
-
 class AugustOperatorSensor(AugustEntityMixin, RestoreSensor):
     """Representation of an August lock operation sensor."""
 
@@ -181,8 +157,6 @@ class AugustOperatorSensor(AugustEntityMixin, RestoreSensor):
     def __init__(self, data: AugustData, device) -> None:
         """Initialize the sensor."""
         super().__init__(data, device)
-        self._data = data
-        self._device = device
         self._operated_remote: bool | None = None
         self._operated_keypad: bool | None = None
         self._operated_manual: bool | None = None
@@ -279,15 +253,13 @@ class AugustBatterySensor(AugustEntityMixin, SensorEntity, Generic[_T]):
     def __init__(
         self,
         data: AugustData,
-        device,
-        old_device,
+        device: Doorbell | Lock | KeypadDetail,
         description: AugustSensorEntityDescription[_T],
     ) -> None:
         """Initialize the sensor."""
         super().__init__(data, device)
         self.entity_description = description
         self._attr_unique_id = f"{self._device_id}_{description.key}"
-        self.old_unique_id = f"{old_device.device_id}_{description.key}"
         self._update_from_data()
 
     @callback