HygroSet II Round Digital Hygrometer for Humidors, 10-Second Refresh Rate, Battery Included, +/- 2% Humidity and 1% Tempeture Accuracy for Cigar Humidors, by Quality Importers

Round Digital Hygrometer with Adjustment Feature – Never wonder if yourdigital hygrometer is accurate. The HygroSet II is the first digitalhygrometer of its kind capable of being adjusted after calibration. Each clickof the adjustment knob changes the humidity display (+ / -) by1-percent.Button cell battery included.Note: Quality Importers HygroSet IIRound Digital Hygrometer is not compatible with exterior mount humidor models.