Stop walking across a dark room to turn on the light. Install a 3-way switch and control lights from two locations.

If you're keen on smart home accessories, you might have a wireless smart switch in your home. However, many homes will still use traditional light switches, most of which will make a clicking ...

So why not play it safe and make use of your light switch? Admittedly, it wasn’t because [Tyler Bletsch] didn’t want to mess around with AC directly, but rather out of necessity. You see ...

Back when he was first starting out in electronics he built this infrared-controlled light switch that works with a standard TV remote control. [Vadim]’s first few projects ended up as parts for ...

Or flip a switch at the bottom of the stairs, and then again at the top. The next person, coming from either direction, must be able to turn the light on again. That's where 3-way switches come in.