Mi Home APP: Download the APP on the Google Play or APP Store The APP supports muti-language setting If APP connection fails, please open the APP setting and switch the region to China, then reconnect. Features: * 1.5-inch LCD digital display, more clear and high definition. * Sweetly designed with baby remind mode, and reminded by the Mi Home APP. * Built-in Switzerland Sensirion accurate digital thermometer * Slim and adorable size, tough ABS eco-friendly material, easily placed everywhere. * Two of emoticons directly reminds you the comfort degree. * Powered by button battery can supply long-term lifespan. * Smart linkage with air conditioning/ smart heater/humidity and more Mijia smart devices. Specification: : XIAOMI Mijia Wireless Connection: BT 4.2 BLE Measure range: 0-60 Deg.C Temperature display resolution: 0.1Deg.C Humidity range: 0%- 99%RH Humidity display resolution:1% RH Package included: 4 * Mijia Thermometer Hygrometer 2 1 * Wall Sticker 1 * Use Manual