Keep Your Bathroom Dry! Helps prevent mold. Saves on your energy bills. Works automatically. Fits in any fan or light switch electrical box.

DewStop: The bathroom ventilation fan has always been simple but problematic. It gets left on or not turned on at the right time, or at all. Long showers are enjoyed and walked away from without a thought for the possible molding and paint-peeling effects of condensation. A DewStop switch cures this problem and takes the issue off your mind. There are two models of DewStop: The FS-100 (fan control only) and the FS-200 (fan and light control both).

With a low-cost DewStop switch, your bathroom fan changes from ordinary to intelligent...

DewStop Fan Switches in display-ready 3-Packs

Make your fan a smart fan.

Buy a DewStop Fan Switch ››

Watch a how-to install video ››
Watch the video in French ››

Handle Condensation Problems With DewStop: Through practical innovation, DewStop offers a bath fan switch that fully controls condensation problems in common areas of the home or business. Areas such as bathrooms, spa rooms, swimming pool rooms, kitchens, laboratories, ski cabin dry rooms, and unfinished basements.

DewStop has taken its patent pending technology and packaged it into a single fan switch anyone can install!

Simply connect your new or existing bathroom exhaust fan to the DewStop switch. When DewStop senses rising condensation levels, it automatically turns on the fan and keeps it on until the condensation is no longer a problem and your room is dry.

You can also turn it on and off manually when you want to, or just rely on the DewStop sensor to do the job.

Controlling condensation helps minimize damage to walls and household goods, as well as lessen or stop the growth of mold. And because the DewStop only comes on when it's needed and stops after 30 minutes, it helps you save on your energy costs. For further savings, the sensor needs no maintenance and provides a lifetime of use.

Prevent Condensation Problems ››

DewStop In The News: Keep up to date on all things DewStop. From magazine articles to online news, blog posts and independent product testing and reviews, find out what people are saying.

Popular Science Magazine
Best of What's New 2010: GTR Technologies Dewstop Condensation Detector - Brainiest Dew-Fighter

The Family Handyman Magazine
Home Care & Repair - Install an automatic fan switch to prevent dampness and mold

This Old House
On The Hardware Aisle - Combat icky bathroom mold with GTR's DewStop

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