Key Features . Built-in high precision sensor to monitor temperature and humidityElegant design with a 1.5″ LCD displayBaby mode via BluetoothInterconnect with another smart device via Bluetooth gatewayEasily stick or hang onto the wallLow power consumption lasting up to 1 year . Easily monitor the temperature and humidity in your room with the Xiaomi Mi Temperature and Humidity Monitor 2. It comes with a built-in high precision sensor to monitor temperature and humidity with great accuracy. Its elegant design is complemented with a 1.5″ LCD display making it easy to see and monitor its readings. The monitor can interconnect with various other smart devices via Bluetooth and can be used to turn on certain devices like a heater or humidifier when the temperature or humidity reaches a certain level.The built-in Mi Bluetooth Hygrometer 2 has a built-in Swiss Sensirion high-precision digital temperature and humidity sensor which can quick and accurately detect changes in temperature and humidity and promptly remind you and your family. It even features a Baby mode which lets you know when the temperature or humidity exceeds the comfort zone of a baby and even give you suggestions for coping with it..