October 27, 2015 Add as a preferred source on Google Add as a preferred source on Google Exhaust fans help prevent mold and mildew in bathrooms and basements, but when left on, they waste electricity.

The Wyze Night Light is a simple, rechargeable night light with an integrated dawn-to-dusk sensor that turns on when it's dark and motion is detected. They come in packs of three for $20 and can ...

More sense than money.

Light sensors often use an infrared LED as a light source. Infrared LEDs have a greater intensity than LEDs that emit visible light. And when infrared photodiodes are used the sensors are relatively ...