Hygrometer, 4" dial. Monitor sauna humidity with our standard sauna dial hygrometer. Measures from 0% to 100%. Adjustable fine tuning calibration screw on backside. Case is made of high temperature plastic.
- Size: 4" Diameter x 1" Deep
- Hygrometer Calibration
Installation Tip: Hang on small nail or screw on wall in neutral area, at least 3 feet away from door and heater, 1 foot down from ceiling for accurate reading of sauna temperature.