Stop walking across a dark room to turn on the light. Install a 3-way switch and control lights from two locations.

Many models of one-pole light switches actually are marked “ON” and “OFF” but you do not see this marking on three-way or four-way switches. The three-way switch has two carrier wires, and it just ...

There are two types of light switches, says Donnelly: a single-pole light switch, which has two wires, and a three-way light switch with three wires that usually look identical. “You need to put ...

Two arms with metal contact pads draw electricity ... If you have conventional single-pole light switches in single-gang boxes, the SwitchLight is a terrific night light and switch locator.

Unlike single-pole switches, which control lights from one location, 3-ways work in pairs. You must have two of them — and only two. (For more than two locations, add 4-way switches.) ...