【Digital Hygrometer Thermometer】: LCD display, light source, easy to read and display temperature and humidity. 【High Precision Digital Sensors】First used in hygrometers and thermometers, capable of measuring subtle changes. Temperature difference +0.3 degrees Celsius; humidity difference + 3%; Temperature range: 0.0°C~60.0°C, humidity measurement range: 0 to 99% RH. 【Baby Mode Reminder】: Baby mode reminder is designed to be intimate and intelligent protection is activated. If the temperature or humidity exceeds the baby's comfort range, the Mijia app will automatically remind you and offer tips to provide smart protection for you and your family. 【With Smart Device】: Can be used with Bluetooth Gateway (B082XCWH71) for Xiaomi. The Mijia Thermometer and Hygrometer 2 can be used with other smart home devices to improve indoor comfort and lead to smart and healthy living. Note: In the Mijia app, search for Mijia Thermometers and Hygrometers 2 and add them to access the link. 【Temperature and Humidity Data Storage】Open the "Mijia App", add the Mijia Bluetooth Thermometer 2 device, you can view the temperature and humidity curve in real-time. Data is saved in the thermometer's body and in the cloud.