1. for EWelink Smart ZigBee Temperature and Humidity Sensor:A for EWelink ZigBee Gateway Hub is a must to work with the temperature and humidity sensor,as well as a variety of ZigBee smart products, which is proved to be the bridge 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/ for EWelink App. 2. Real-time perception of temperature and humidity changes and real-time report to your smart phones with Smart Life for EWelink App supported.View 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. ZigBee technology with low power consumption microprocessor 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. 4. 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 our smart life. 5. Widely used in various places and easily stick it to the wall with the sticker for simple installation,light and compact.Easy set up and configure to your Smart Life App for convenient Zigbee 3.0 wireless protocol Ultra-long standby time, ensuring year-round operation Detects ambient temperature and humidity Remotely view status via mobile phone Quickly add devices with one click Supports intelligent linkage with other devices Easy installation and ease of use Product Name: Zigbee Temperature and Humidity Sensor App Name: for EWelink App Wireless Protocol: Zigbee 3.0 Temperature Measurement Accuracy: ±0.6°C Humidity Measurement Accuracy: ±6% Operating Voltage: 3V Standby Current: ≤5uA Battery Type: CR2450 Standby Time: ≥6 months Operating Temperature: -10°C to 55°C