... : Car,Room,OfficePerformance specification:1, LCD liquid crystal display the temperature, humidity, air quality grade, and three kinds of backlight: green, yellow ... battery 3. 8V/1500?mA/DC12V/AC220V2,?Suitable temperature: - 20°C, + 130°C3, Suitable humidity: 80% RH4, Product size: 190×160×45mm ...