Item Type: Thermometer Material: ABS Purpose: For temperature and humidity detection. Battery: 1 x .5V AAA battery, without battery. Temperature Detection Range: -10℃~+50℃, that is, +14 ℉~+122 ℉. Humidity Detection Range: 20% RH~90% RH1、Practical Tool: This thermometer can accurately test both temperature and humidity of ?10℃~+50℃, that is, +14℉~+122℉ and 20%RH~90%RH. 2、Easy Measuring: Wide in testing range and high in accuracy, the hygrometer also has maximum and minimum humidity and temp memory. 3、Other Function: Supports 12 and 24 hour time display, time telling function, alarm function and calendar function, very practical. 4、Better Display: The large screen enables a clear digital display, which will also largely simplify the operation for convenient use. 5、Ideal Present: You can give this temp tester to your family, friends and loved ones for Christmas, anniversary, birthday and so on. 1. If the machine is defective, reinstall the battery; 2. Please put the battery back to the designated place after use.1 x Thermometer1 x User Manual