diff --git a/homeassistant/components/fitbit/const.py b/homeassistant/components/fitbit/const.py
index d746e63ca52..1578359356d 100644
--- a/homeassistant/components/fitbit/const.py
+++ b/homeassistant/components/fitbit/const.py
@@ -1,18 +1,11 @@
 """Constants for the Fitbit platform."""
 from __future__ import annotations
 
-from dataclasses import dataclass
 from typing import Final
 
-from homeassistant.components.sensor import (
-    SensorDeviceClass,
-    SensorEntityDescription,
-    SensorStateClass,
-)
 from homeassistant.const import (
     CONF_CLIENT_ID,
     CONF_CLIENT_SECRET,
-    PERCENTAGE,
     UnitOfLength,
     UnitOfMass,
     UnitOfTime,
@@ -49,245 +42,6 @@ DEFAULT_CONFIG: Final[dict[str, str]] = {
 DEFAULT_CLOCK_FORMAT: Final = "24H"
 
 
-@dataclass
-class FitbitSensorEntityDescription(SensorEntityDescription):
-    """Describes Fitbit sensor entity."""
-
-    unit_type: str | None = None
-
-
-FITBIT_RESOURCES_LIST: Final[tuple[FitbitSensorEntityDescription, ...]] = (
-    FitbitSensorEntityDescription(
-        key="activities/activityCalories",
-        name="Activity Calories",
-        native_unit_of_measurement="cal",
-        icon="mdi:fire",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/calories",
-        name="Calories",
-        native_unit_of_measurement="cal",
-        icon="mdi:fire",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/caloriesBMR",
-        name="Calories BMR",
-        native_unit_of_measurement="cal",
-        icon="mdi:fire",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/distance",
-        name="Distance",
-        unit_type="distance",
-        icon="mdi:map-marker",
-        device_class=SensorDeviceClass.DISTANCE,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/elevation",
-        name="Elevation",
-        unit_type="elevation",
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DISTANCE,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/floors",
-        name="Floors",
-        native_unit_of_measurement="floors",
-        icon="mdi:walk",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/heart",
-        name="Resting Heart Rate",
-        native_unit_of_measurement="bpm",
-        icon="mdi:heart-pulse",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/minutesFairlyActive",
-        name="Minutes Fairly Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/minutesLightlyActive",
-        name="Minutes Lightly Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/minutesSedentary",
-        name="Minutes Sedentary",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:seat-recline-normal",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/minutesVeryActive",
-        name="Minutes Very Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:run",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/steps",
-        name="Steps",
-        native_unit_of_measurement="steps",
-        icon="mdi:walk",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/activityCalories",
-        name="Tracker Activity Calories",
-        native_unit_of_measurement="cal",
-        icon="mdi:fire",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/calories",
-        name="Tracker Calories",
-        native_unit_of_measurement="cal",
-        icon="mdi:fire",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/distance",
-        name="Tracker Distance",
-        unit_type="distance",
-        icon="mdi:map-marker",
-        device_class=SensorDeviceClass.DISTANCE,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/elevation",
-        name="Tracker Elevation",
-        unit_type="elevation",
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DISTANCE,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/floors",
-        name="Tracker Floors",
-        native_unit_of_measurement="floors",
-        icon="mdi:walk",
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/minutesFairlyActive",
-        name="Tracker Minutes Fairly Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/minutesLightlyActive",
-        name="Tracker Minutes Lightly Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:walk",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/minutesSedentary",
-        name="Tracker Minutes Sedentary",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:seat-recline-normal",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/minutesVeryActive",
-        name="Tracker Minutes Very Active",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:run",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="activities/tracker/steps",
-        name="Tracker Steps",
-        native_unit_of_measurement="steps",
-        icon="mdi:walk",
-    ),
-    FitbitSensorEntityDescription(
-        key="body/bmi",
-        name="BMI",
-        native_unit_of_measurement="BMI",
-        icon="mdi:human",
-        state_class=SensorStateClass.MEASUREMENT,
-    ),
-    FitbitSensorEntityDescription(
-        key="body/fat",
-        name="Body Fat",
-        native_unit_of_measurement=PERCENTAGE,
-        icon="mdi:human",
-        state_class=SensorStateClass.MEASUREMENT,
-    ),
-    FitbitSensorEntityDescription(
-        key="body/weight",
-        name="Weight",
-        unit_type="weight",
-        icon="mdi:human",
-        state_class=SensorStateClass.MEASUREMENT,
-        device_class=SensorDeviceClass.WEIGHT,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/awakeningsCount",
-        name="Awakenings Count",
-        native_unit_of_measurement="times awaken",
-        icon="mdi:sleep",
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/efficiency",
-        name="Sleep Efficiency",
-        native_unit_of_measurement=PERCENTAGE,
-        icon="mdi:sleep",
-        state_class=SensorStateClass.MEASUREMENT,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/minutesAfterWakeup",
-        name="Minutes After Wakeup",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:sleep",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/minutesAsleep",
-        name="Sleep Minutes Asleep",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:sleep",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/minutesAwake",
-        name="Sleep Minutes Awake",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:sleep",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/minutesToFallAsleep",
-        name="Sleep Minutes to Fall Asleep",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:sleep",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/startTime",
-        name="Sleep Start Time",
-        icon="mdi:clock",
-    ),
-    FitbitSensorEntityDescription(
-        key="sleep/timeInBed",
-        name="Sleep Time in Bed",
-        native_unit_of_measurement=UnitOfTime.MINUTES,
-        icon="mdi:hotel",
-        device_class=SensorDeviceClass.DURATION,
-    ),
-)
-
-FITBIT_RESOURCE_BATTERY = FitbitSensorEntityDescription(
-    key="devices/battery",
-    name="Battery",
-    icon="mdi:battery",
-)
-
-FITBIT_RESOURCES_KEYS: Final[list[str]] = [
-    desc.key for desc in (*FITBIT_RESOURCES_LIST, FITBIT_RESOURCE_BATTERY)
-]
-
 FITBIT_MEASUREMENTS: Final[dict[str, dict[str, str]]] = {
     "en_US": {
         ATTR_DURATION: UnitOfTime.MILLISECONDS,
diff --git a/homeassistant/components/fitbit/sensor.py b/homeassistant/components/fitbit/sensor.py
index 11946c42173..6c93fbe35c1 100644
--- a/homeassistant/components/fitbit/sensor.py
+++ b/homeassistant/components/fitbit/sensor.py
@@ -1,6 +1,7 @@
 """Support for the Fitbit API."""
 from __future__ import annotations
 
+from dataclasses import dataclass
 import datetime
 import logging
 import os
@@ -17,9 +18,18 @@ from homeassistant.components import configurator
 from homeassistant.components.http import HomeAssistantView
 from homeassistant.components.sensor import (
     PLATFORM_SCHEMA as PARENT_PLATFORM_SCHEMA,
+    SensorDeviceClass,
     SensorEntity,
+    SensorEntityDescription,
+    SensorStateClass,
+)
+from homeassistant.const import (
+    CONF_CLIENT_ID,
+    CONF_CLIENT_SECRET,
+    CONF_UNIT_SYSTEM,
+    PERCENTAGE,
+    UnitOfTime,
 )
-from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, CONF_UNIT_SYSTEM
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -45,10 +55,6 @@ from .const import (
     FITBIT_CONFIG_FILE,
     FITBIT_DEFAULT_RESOURCES,
     FITBIT_MEASUREMENTS,
-    FITBIT_RESOURCE_BATTERY,
-    FITBIT_RESOURCES_KEYS,
-    FITBIT_RESOURCES_LIST,
-    FitbitSensorEntityDescription,
 )
 
 _LOGGER: Final = logging.getLogger(__name__)
@@ -57,6 +63,246 @@ _CONFIGURING: dict[str, str] = {}
 
 SCAN_INTERVAL: Final = datetime.timedelta(minutes=30)
 
+
+@dataclass
+class FitbitSensorEntityDescription(SensorEntityDescription):
+    """Describes Fitbit sensor entity."""
+
+    unit_type: str | None = None
+
+
+FITBIT_RESOURCES_LIST: Final[tuple[FitbitSensorEntityDescription, ...]] = (
+    FitbitSensorEntityDescription(
+        key="activities/activityCalories",
+        name="Activity Calories",
+        native_unit_of_measurement="cal",
+        icon="mdi:fire",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/calories",
+        name="Calories",
+        native_unit_of_measurement="cal",
+        icon="mdi:fire",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/caloriesBMR",
+        name="Calories BMR",
+        native_unit_of_measurement="cal",
+        icon="mdi:fire",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/distance",
+        name="Distance",
+        unit_type="distance",
+        icon="mdi:map-marker",
+        device_class=SensorDeviceClass.DISTANCE,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/elevation",
+        name="Elevation",
+        unit_type="elevation",
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DISTANCE,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/floors",
+        name="Floors",
+        native_unit_of_measurement="floors",
+        icon="mdi:walk",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/heart",
+        name="Resting Heart Rate",
+        native_unit_of_measurement="bpm",
+        icon="mdi:heart-pulse",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/minutesFairlyActive",
+        name="Minutes Fairly Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/minutesLightlyActive",
+        name="Minutes Lightly Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/minutesSedentary",
+        name="Minutes Sedentary",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:seat-recline-normal",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/minutesVeryActive",
+        name="Minutes Very Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:run",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/steps",
+        name="Steps",
+        native_unit_of_measurement="steps",
+        icon="mdi:walk",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/activityCalories",
+        name="Tracker Activity Calories",
+        native_unit_of_measurement="cal",
+        icon="mdi:fire",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/calories",
+        name="Tracker Calories",
+        native_unit_of_measurement="cal",
+        icon="mdi:fire",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/distance",
+        name="Tracker Distance",
+        unit_type="distance",
+        icon="mdi:map-marker",
+        device_class=SensorDeviceClass.DISTANCE,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/elevation",
+        name="Tracker Elevation",
+        unit_type="elevation",
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DISTANCE,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/floors",
+        name="Tracker Floors",
+        native_unit_of_measurement="floors",
+        icon="mdi:walk",
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/minutesFairlyActive",
+        name="Tracker Minutes Fairly Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/minutesLightlyActive",
+        name="Tracker Minutes Lightly Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:walk",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/minutesSedentary",
+        name="Tracker Minutes Sedentary",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:seat-recline-normal",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/minutesVeryActive",
+        name="Tracker Minutes Very Active",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:run",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="activities/tracker/steps",
+        name="Tracker Steps",
+        native_unit_of_measurement="steps",
+        icon="mdi:walk",
+    ),
+    FitbitSensorEntityDescription(
+        key="body/bmi",
+        name="BMI",
+        native_unit_of_measurement="BMI",
+        icon="mdi:human",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    FitbitSensorEntityDescription(
+        key="body/fat",
+        name="Body Fat",
+        native_unit_of_measurement=PERCENTAGE,
+        icon="mdi:human",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    FitbitSensorEntityDescription(
+        key="body/weight",
+        name="Weight",
+        unit_type="weight",
+        icon="mdi:human",
+        state_class=SensorStateClass.MEASUREMENT,
+        device_class=SensorDeviceClass.WEIGHT,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/awakeningsCount",
+        name="Awakenings Count",
+        native_unit_of_measurement="times awaken",
+        icon="mdi:sleep",
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/efficiency",
+        name="Sleep Efficiency",
+        native_unit_of_measurement=PERCENTAGE,
+        icon="mdi:sleep",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/minutesAfterWakeup",
+        name="Minutes After Wakeup",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:sleep",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/minutesAsleep",
+        name="Sleep Minutes Asleep",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:sleep",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/minutesAwake",
+        name="Sleep Minutes Awake",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:sleep",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/minutesToFallAsleep",
+        name="Sleep Minutes to Fall Asleep",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:sleep",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/startTime",
+        name="Sleep Start Time",
+        icon="mdi:clock",
+    ),
+    FitbitSensorEntityDescription(
+        key="sleep/timeInBed",
+        name="Sleep Time in Bed",
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        icon="mdi:hotel",
+        device_class=SensorDeviceClass.DURATION,
+    ),
+)
+
+FITBIT_RESOURCE_BATTERY = FitbitSensorEntityDescription(
+    key="devices/battery",
+    name="Battery",
+    icon="mdi:battery",
+)
+
+FITBIT_RESOURCES_KEYS: Final[list[str]] = [
+    desc.key for desc in (*FITBIT_RESOURCES_LIST, FITBIT_RESOURCE_BATTERY)
+]
+
 PLATFORM_SCHEMA: Final = PARENT_PLATFORM_SCHEMA.extend(
     {
         vol.Optional(