Digital Thermo Hygrometer Thermometer RH by Gain Express Temperature: Range [-10C~60C (14F~140F)]; Resolution [0.1C (0.2F)]; Accuracy [1.0C (1.8F)] Temperature, Relative Humidity and Dew Point measurements Humidity: Range 20%~95% / Dew Point Range : -29C~59C (-20.2F ~ 138.2F) Selectable C/F temperature units Can be used either indoor or outdoor