Pair this dehumidistat with an exhaust fan to control humidity in your bathroom. It is also effective with a fan installed in an attic to help with moisture problems. Set your desired humidity level and the unit turns on the fan to ventilate the space when humidity rises. When it reaches the set level, the control will turn off the fan. Easy to install, the dehumidistat has a range of 20-80% relative humidity. It works well with all bathroom fans.