You are bidding on a Brand New Digital Thermo-Hygrometer with Alarm clock This unit is a multifunction meter with 4" display, which can measure temperature and humidity. It can display current time and date and determine whether the environment is comfortable, too wet or too dry. Alarm function, temperature unit selection, storage of max and min temperature and humidity values are available. It is very useful and easy to use. This device has got a CE certificate and related test report. So it's safe to use and reliable. Functions Current time and date display Time alarm 12/24 hours clock C/F temperature Relative humidity and relevant comfort degree Real time indications of temperature and humidity Specifications Working Temperature: 10C ~ 50C Storage Temperature: -10C ~ 60C 4" LCD Display Temperature Resolution: 0.1C Temperature Precesion: +/- 1.0C Relative Humidity Measurement Range: 20% ~ 90% Humidity Resolution: 1% Sampling Rate: Once every 10 seconds Resetting Response: The display lights up for about 3 seconds, the built-in buzzer beeps Battery: 1.5v AAA single (included) Size: 108mm x 101mm x 23mm Weight: about 130g