Humi-Care Black Ice's most advanced hygrometer yet. Accurate within +/- 2% RH, and ready to go out of the box, this unit makes monitoring your humidor's conditions a breeze. Displays in Fahrenheit or Celsius.
It fits nicely in my humidor and is easy to see display but it reads 5% less than actual humidity and can't be calibrated to read correctly. If you purchase this I would recommend verifying it's accuracy.