The Extech 445580 humidity and temperature pen features a compact design that is ideal for field use. With a range of 0 to 100% and a basic accuracy of ±5% for humidity and temperature range of 32 to 122°F with an accuracy of ±1.5°, the Extech 445580 humidity and temperature pen can simultaneously display temperature (°C / °F) and relative humidity with a maximum resolution of 0.1% RH and 0.1°F.
Other features of the Extech 445580 humidity and temperature pen include MAX / MIN, data hold, and a built-in self calibration utility that allows for field calibrations. The self calibration requires the optional relative humidity bottles which are included in the 445582 kit.
