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.

“The first thing any homeowner needs to know is if they are not comfortable or do not know what they are doing when it comes to working with electricity in any way, hire a professional,” says Joe ...

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 ...