diff --git a/homeassistant/components/microbees/sensor.py b/homeassistant/components/microbees/sensor.py
index a17a5db7a54a..a88b41fae5a8 100644
--- a/homeassistant/components/microbees/sensor.py
+++ b/homeassistant/components/microbees/sensor.py
@@ -10,13 +10,7 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.const import (
-    CONCENTRATION_PARTS_PER_MILLION,
-    LIGHT_LUX,
-    PERCENTAGE,
-    UnitOfPower,
-    UnitOfTemperature,
-)
+from homeassistant.const import LIGHT_LUX, UnitOfPower, UnitOfRatio, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
@@ -42,14 +36,14 @@ SENSOR_TYPES = {
     14: SensorEntityDescription(
         device_class=SensorDeviceClass.CO2,
         state_class=SensorStateClass.MEASUREMENT,
-        native_unit_of_measurement=CONCENTRATION_PARTS_PER_MILLION,
+        native_unit_of_measurement=UnitOfRatio.PARTS_PER_MILLION,
         key="carbon_dioxide",
         suggested_display_precision=1,
     ),
     16: SensorEntityDescription(
         device_class=SensorDeviceClass.HUMIDITY,
         state_class=SensorStateClass.MEASUREMENT,
-        native_unit_of_measurement=PERCENTAGE,
+        native_unit_of_measurement=UnitOfRatio.PERCENTAGE,
         key="humidity",
         suggested_display_precision=1,
     ),