diff --git a/README.md b/README.md
index 4b1fac1..1bf94ac 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,8 @@ At the moment following sensor data can be read:
 - BME280_temperature
 - BME280_humidity
 - BME280_pressure
+- HTU21D_temperature
+- HTU21D_humidity
 
 Sensor type `signal` gives the wifi signal strength of the sensor device.
 
diff --git a/custom_components/local_luftdaten/sensor.py b/custom_components/local_luftdaten/sensor.py
index b0f7994..1da65e4 100644
--- a/custom_components/local_luftdaten/sensor.py
+++ b/custom_components/local_luftdaten/sensor.py
@@ -37,6 +37,8 @@
 SENSOR_PM1 = 'SDS_P1'
 SENSOR_PM2 = 'SDS_P2'
 SENSOR_WIFI_SIGNAL = 'signal'
+SENSOR_HTU21D_TEMPERATURE = 'HTU21D_temperature'
+SENSOR_HTU21D_HUMIDITY = 'HTU21D_humidity'
 
 SENSOR_TYPES = {
     SENSOR_TEMPERATURE: ['Temperature', TEMP_CELSIUS],
@@ -46,7 +48,9 @@
     SENSOR_BME280_PRESSURE: ['Pressure', 'mb'],
     SENSOR_PM1: ['PM10', VOLUME_MICROGRAMS_PER_CUBIC_METER],
     SENSOR_PM2: ['PM2.5', VOLUME_MICROGRAMS_PER_CUBIC_METER],
-    SENSOR_WIFI_SIGNAL: ['Wifi signal', 'dBm']
+    SENSOR_WIFI_SIGNAL: ['Wifi signal', 'dBm'],
+    SENSOR_HTU21D_TEMPERATURE: ['Temperature', TEMP_CELSIUS], 
+    SENSOR_HTU21D_HUMIDITY: ['Humidity', '%']
 }
 
 DEFAULT_NAME = 'Luftdaten Sensor'