Four pigtails emerge from the backside of the switch—line, load, neutral, and ground—each of which must be connected via included wire nuts to the appropriate wires inside the wall.

If your smart switch has pigtails, like the one in our example, twist the like wires together (neutral to neutral, load to load, and so on) and secure each of them with a wire nut.

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.

Christopher Null This being a simple single-pole switch with pigtails, it’s easy enough to install with wire nuts connecting the line, load, neutral, and ground wires to the wires inside your wall.

Add intelligence to your lamps with a smart light switch! By swapping out your old switches, you can command home lighting from your phone or with your voice.

GE has a new line of smart switches and dimmers that can be installed in homes that do not have neutral wires, such as many that were built before 1980. The new products provide an alternative to ...

Leviton’s latest smart switch doesn’t require a neutral wire. Jennifer Pattison Tuohy is a senior reviewer focused on smart home and connected tech, with over twenty years of experience.

Smart light switches can offer plenty of convenience and potential energy savings. Here are six of the best that are sure to meet a range of different needs.