DewStop Fan Switch

Reduce mold and mildew in the bathroom or anywhere else with this moisture-sensing fan switch from GTR Technologies. The Condensation Sentry sensor detects condensation on nearby surfaces and automatically activates the ceiling fan, airing out the room until it reaches an acceptable level. At that point, the fan will shut itself off. Users can also turn the fan on and off manually as needed. The device can be retrofitted to any model of ceiling fan.