3 Way Light. A light or lights can be controlled by more than one switch. Your three way switch simply has a shuttle and two conductors to connect the bulb.
Don't put up with old three-way light switches like this.
A light or lights can be controlled by more than one switch.
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Three-way switches allow for controlling a light fixture from two separate locations, these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. Swap them out for something new and This guide will take you through the steps of replacing those aging three-way light switches with updated. A three-way switch is built and wired a little differently than a conventional single-pole light.