[Thermometer and hygrometer with digital display]: LCD display, light source, convenient reading, temperature and humidity display. [High precision Swiss Sensirion digital sensor decision] It is used; for the first time in the hygrometer and thermometer, which can measure subtle changes. Temperature difference +0.3 degrees Celsius; humidity difference +3%; temperature measurement range: 0.060.0, humidity measurement range: 099% humidity relative. [Baby Mode Reminder]: The baby mode reminder is intimately designed and intelligent protection is activated. If the temperature or humidity exceeds the baby's comfort range, the Mijia app will automatically remind you and provide guidance to provide smart protection for you and your family. [With smart device]: It can to be used with the Xiaomi Bluetooth Gateway (B082XCWH71). The Mijia Thermo-Hygrometer 2 can be used with other smart home devices to improve indoor comfort and lead a smart and healthy life. Note: In Mijia App, search for Mijia 2 Thermometer and Hygrometer and add them to enter the link. [Temperature and Humidity Data Storage ;] Open "Mijia App", add the Mijia Bluetooth Thermometer 2 device, you can view the temperature and humidity curve. in real time, and the data is stored in the thermometer body and in the cloud.