Pure wireless thermo hygrometer for hanging or standing up. Made of plastic. Ultra-flat design (9.5 mm), transmission of outdoor temperature and humidity via up to 3 transmitters (maximum 40 meter). Indication of indoor temperature and humidity, comfort level, tendency indicators. Maximum and minimum function. Temperature alarm, radio controlled clock with date and day of week (7 languages), different alarm times (workday, weekend, earlier alarm for frost alert). Temperature range outdoor -20 to +60 degree C, indoor -5 to + 50 degree C, interchangeable degree C/degree f, air humidity 20 to 95 percent. CR2032 batteries included. Measures 178 mm width by 121 mm height by 10 mm depth.