diff --git a/homeassistant/components/opengarage/sensor.py b/homeassistant/components/opengarage/sensor.py
index bf75cd34998..5e9591e8b6c 100644
--- a/homeassistant/components/opengarage/sensor.py
+++ b/homeassistant/components/opengarage/sensor.py
@@ -13,7 +13,7 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     LENGTH_CENTIMETERS,
     PERCENTAGE,
-    SIGNAL_STRENGTH_DECIBELS,
+    SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     TEMP_CELSIUS,
 )
 from homeassistant.core import HomeAssistant, callback
@@ -37,7 +37,7 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.SIGNAL_STRENGTH,
         entity_category=EntityCategory.DIAGNOSTIC,
         entity_registry_enabled_default=False,
-        native_unit_of_measurement=SIGNAL_STRENGTH_DECIBELS,
+        native_unit_of_measurement=SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
         state_class=SensorStateClass.MEASUREMENT,
     ),
     SensorEntityDescription(