description : new original xiaomi mini smart temperature and humidity sensor white this is not only a temperature but also a humidity sensor ! with this sensor you can monitoring your home/office's data by your phone. it can also link with other xiaomi products make them work when reach certain temperature or humidity. make your phone more sensitive and make your home smarter :) note : this item must match the xiaomi multi-functional gateway to use. features : it can real-time detect the temperature and humidity condition. automatic alarm if the temperature and humidity is abnormal. you can easy view the temperature and humidity change by the data according to all historical records. app control : xiaomi smart home temperature measuring accuracy : ±0.3°c humidity measuring accuracy : ±3% specification : working temperature : - 20 ~ 60°c working humidity : 0 ~ 100 weight : 85g size : 9 x 9 x 3cm package includes : 1 x xiaomi temperature and humidity smart sensor 1 x cr2032 battery includes