Install a Humidity Sensor to Automatically Control the Exhaust Fan
Exhaust fans help prevent mildew and mildew in bathrooms and basements, but when left on, they waste electricity. Automate this process by installing a humidity sensor instead of a fan switch.
The humidity sensor turns on a manual fan switch, but if the sensor is configured correctly, it should turn on and off based on the humidity in the room. With most sensors, you can also determine how long it should run if it detects a certain level of humidity.
Installing a humidity sensor is a do-it-yourself project, but first you must determine if your junction box has a neutral wire that is required to install such a device. Watch the video above for full instructions. The Leviton humidity sensor featured is $ 31.49 on Amazon.
How to Install a Humidity Sensor | Home Repair Tutor (YouTube)