Automatic Fan Switch

The DewStop fan switch monitors humidity and dew point levels in a room and automatically switches the exhaust fan on or off to adjust for condensation. The Condensation Sentry is triggered when steam in the room becomes too heavy for the air to support and accumulates on surfaces; it turns the fan on for 30 minutes or until the room is dry. It also has manual on/off functionality. It can be installed with existing bathroom fans.

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