Metal ring design With a ring, it can be hung anywhere, and it is also easy to remove and change to any place you want. Smart Scene Linkage Set up a smart scene linkage with other smart such as air conditioners and humidifiers Voice Control Use or Home to control the temperature and humidity sensor with your voice. ZigBee Communication The sensor uses ZigBee communication to a stable and reliable connection. Indoor Humidity Detector Detects the indoor humidity and sends a notification to the phone when the humidity reaches a certain range. Temperature Sensor The sensor measures the temperature and sends a notification to the phone when the humidity reaches a certain range. Colour:black Material:plastic Note: The temperature and humidity sensor requires a Tuya Zigbee gateway to work with it Package Contents: 1 * Temperature and humidity sensor Only the above package content, other products are not included.