Smart switches require a neutral wire for power, but many older homes do not have one available. You should never attempt electrical work unless you are a licensed or experienced electrician.

Even if your home wasn't exactly built "smart," it is still possible to add HomeKit light switches without a neutral wire. Here's how. There are many ways to install a smart lighting system in your ...

A friend who was buying an older house was concerned about electrical safety and asked for my opinion as an electrical engineer. All of the AC receptacles (also called outlets) in the house were the ...