Traceable Memory HygrometerThermometer measures from 10.0 to 95.0 relative humidity and temperature from 20 to 50C (20 to 122F). Precision thermistor offers a temperature accuracy of 1C between 0 to 40C, otherwise 2C, and a resolution of 0.1. Reads Fahrenheit and Celsius. An audible click confirms each key entry. See listing for dew point model specifications.