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.

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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 ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Liam McCabe I made no fewer than five mistakes trying to install a smart ...

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 ...