Spherical Digital Hygrometer with Adjustment Feature – Never ponder whether your digital hygrometer is accurate. The HygroSet II is the primary digital hygrometer of its type able to being adjusted after calibration. Every click of the adjustment knob changes the humidity display (+ / -) by 1-%.
Simple-set calibration directions
Humidity accuracy +/- 2-% from 20-% to 90-%
Temperature accuracy +/- 1 degree
10 Second refresh rate
Note: the hygroset ii Spherical isn’t compatible with exterior mount humidor models