1.Tuya Smart ZigBee Temperature and Humidity Sensor:A Tuya ZigBee Wireless Hub is a must to work with the temperature and humidity sensor,as as a of ZigBee smart products, which is proved to be and control center for smart homes and plays an irreplaceable role for all ZigBee products and realizes the whole intelligent linkage of your house.Simply add the sensor into the ZigBee hub after adding the hub into Smart Life/Tuya App. 2.Real-time perception of temperature and humidity changes and real-time report to your smart phones with Smart Life Tuya App supported. history record in App for smart controls for your house temperature and humidity.Monitor your house temperature and humidity no matter where you are. 3.New ZigBee technology with low power consumption Mini processor for long standby.Designed with low voltage monitoring reminder function in App for real-time power supply for your sensor.Battery powered with long battery life.(Battery not included in the package.) 4.New added with temperature compensation technique with smart scene linkage to your air conditioning and humidifier,offering your house with the most comfortable temperature and humidity to enjoy smart life. Specifications: Product name: Temperature and humidity sensor Battery type:CR2032 Temperature detection range:10 ~ +55C Humidity detection range: 0%~95%RH Temperature detection accuracy:0.5 Humidity detection accuracy: 3% Wireless protocol:ZigBee size:4x1.3cm Material:ABS colour:White Package Contents: 3 x Smart Humidity Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.