TFA metal moxx digital thermo hygrometer ideal for monitoring indoor air. Measures humidity and temperature inside. Large and clear display. Comes with comfort zone. Temperature range: 0 to +50 degree C (+32 degree F to +122 degree F), Humidity indoor 20 to 99 percent. CR2032 button cell included. Measures 53 mm width by 60 mm height by 31 mm depth.