We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Although it’s easy to wire a light switch, you need a basic understanding of how ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.

Q:I have a three-way switch that controls the light at the top of the stairs. The switch at the bottom doesn't always work like it is supposed to. Sometimes when I turn it off, the switch at the top ...

Q: During a recent dinner date at my house, I thought about how romantic it would be if I could dim the lights. My light switch doesn’t have this feature and I would like to replace it with one that ...

There are as many varieties of smart light switches (and dimmers) as there are light bulbs, and while the prospect of upgrading your old dumb switch might seem daunting, they’re usually pretty simple ...