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Switch Your Bathroom Fan From Ordinary to Intelligent!
DewStop FS-100 Condensation Sentry Fan Switch, White
DewStop FS-100 Condensation Sentry™ Fan Switch, White
DewStop FS-100 Condensation Sentry Fan Switch, White
Item# 29281
Price: Normally $59.00 
Hot Deal $43.51
Free shipping on orders over $175 - See Details


  • Fan turns off when condensation is no longer present on the walls
  • Saves energy
  • Low maintenance
  • Long product life
  • Use with your existing fan

Essential Info

The DewStop FS-100 is designed for elegance and performance. This model is for use with any residential fan our customers care to use. The Patent Pending sensor "Condensation Sentry" is at the top. The middle button turns on the fan and the bottom button turns off the fan manually. The sensor needs no maintenance and provides a lifetime of use.

Simple to use: Turn on or off the fan needed. The fan control will turn off the fan for you after 30 minutes. The Condensation Sentry sensor will turn on the fan if condensation presents itself at wall accumulating levels. The sensor will bring the condensation level in the room back down and turn off the fan for you.

More Info

Fan Turns On Automatically
How? DewStop's sensors detect condensation (dew point). The sensors then turn ON the fan and run it until the dew point has been lowered to a dry level.

Built-In Fan Timer
How? When you push the button to turn ON the fan, DewStop will turn the fan OFF for you with its built-in timer.

Helps Prevent Mold & Mildew
How? Mold needs moisture & time to grow. DewStop controls moisture by detecting it & running the fan long enough to dry out a damp environment with a good fan. This greatly reduces the formation of mold, mildew, & harmful bacteria.

Helps Prevent Costly Repairs
How? Moisture, if left unchecked, can get into walls and cause many cosmetic, health, & structural problems. DewStop is always ensuring that your room is never left damp.


Electrical Input: 120 volts @ 60Hz
Maximum Fan Load: 1/8th hp or 3 amps
Important notes:
Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
Manufacturer contact information: GTR Technologies Inc, Tel: (360) 876-2974


2 Ratings
5 star: 50%  (1)
4 star: 0%  (0)
3 star: 50%  (1)
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Average Customer Rating
(2 customer ratings)
Share your thoughts with other customers
Frank -- Burlington nc   9/10/2012
Product worked great for a few months but starting coming on randomly for a few minutes at a time. I really want this product to work so I am going to replace and hope for the best.

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