Extech 445815 Digital Hygrometer, ±4 %RH Accuracy, +14 → 140°C Max, 10 → 99%RH Max

The FLIR Hygro-Thermometer Humidity Alert is a large, easy-to-read triple LCD displays with relative Humidity, Temperature and Dew Point. It has Rear calibration adjustment pot for Humidity and Temperature (available with NIST certification and optional Calibration Standards).

Reset function
Warning of high or low humidity conditions