TFA - Dostmann Dewpoint Pro" Digital Thermo-Hygrometer Range: Temperatur : -40...+70°C / -40...+158°F, H: 0...99% --- Product features : for the control of temperature (precision ±0.5°C) and humidity (precision ±3% at 20...90%; otherwise ±4%), hold-, max.-min.-function, indication of dew point, wet bulb temperature, ideal for checking room conditions, with clip for fixing Range: T: -40...+70°C (-40...+158°F), H: 0...99% 50 x 20 (50) x 173 mm, 71 g, 2x 1,5V AAA batteries included