What type of switch allows multiple switches to control one light?

A three-way switch is specifically designed to allow multiple switches to control a single light or a group of lights from different locations. This setup is particularly useful in areas with multiple entry points, such as hallways or large rooms, where you might want to turn lights on or off from either end without needing to return to the first switch.

In a typical three-way switch configuration, two switches are installed at different locations, and they work together to control the light fixture. This is achieved through a special wiring arrangement that allows the switches to alternate the circuit's path, thus enabling either switch to complete or break the connection to the light.

This capability is essential for enhancing convenience and functionality in residential electrical design, as it provides users with flexibility in controlling lighting from multiple locations. Other types of switches, such as single-pole and double-pole switches, do not have this capability, while a dimmer switch adjusts the brightness rather than providing multiple control points for one light.