What type of switch is used to control a light fixture from two locations?

A three-way switch is designed specifically for controlling a light fixture from two different locations. This functionality is essential in places like hallways or large rooms where you want to turn a light on or off from multiple points.

When using a three-way switch setup, one switch connects to the fixture in a typical manner, while the second switch functions as a pulse control, allowing the circuit to be completed or interrupted regardless of the state of the first switch. This creates a versatile lighting control system, significantly enhancing convenience in everyday use.

In contrast, other switch types have distinct functionalities: a single-pole switch controls a fixture from one location; a double-pole switch is used for two separate circuits or for higher voltage operations; and a four-way switch is utilized in configurations where lighting control is needed from three or more locations. Thus, the choice of a three-way switch is pivotal for achieving the desired control from both locations effectively.