Price: $49.95
Availability: In Stock - Usually ships in 1 to 2 days.
This humidity controller is both a humidistat and a dehumidistat. It has separate outlets for humidify and dehumidify modes which allows you to automate both types of equipment at the same time. In Humidify mode, it can be used to turn on a device like a solenoid valve which powers a misting system when the humidity level drops below the level you select. In Dehumidify mode, the controller can turn on a circulation fan, exhaust fan, or dehumidifier when the humidity level rises above the selected level. This controller also features configurable high and low humidity alarms which emit an audible alert if the humidity % exceeds the set points. No wiring is necessary. Simply plug the device you want to control into the corresponding outlet on the controller, and select the percentage of humidity you want to maintain.


  • 10% to 99% humidity range
  • 1 to 20% adjustable differential
  • Has both humidify & dehumidify modes
  • Built-in humidity calibration
  • Adjustable high and low audible humidity alarms
  • Operates on 110/120 voltage up to 10 amps
  • Includes 5' power cord, 6' remote sensor, & 1' outlet cord

What is a Differential?
The difference between on and off setpoints on a control. For humidity, it is the difference in % humidity between the control's on and off setting. If you set a humidistat with a 3% differential to 71%, it will supply power at any humidity below 71% and cut off at 74% (3% above the setpoint). A dehumidistat would cut on above 71% and off at 68%.
Overall Customer Rating of 2 Reviews:
Waco, Texas

Great for automating misting system

This works great to keep the humidity in my greenhouse from getting too low. I should have purchased one years ago for my misting system!


Humidity controller

Works like a charm.