A rocker switch is a type of electrical switch that is commonly used in various electronic devices and appliances. It is called a “rocker” switch because it has a lever that rocks back and forth to turn the switch on or off.

The switch consists of a plastic or metal frame with a central pivot point and two or more positions where the switch can be locked into place. The switch lever is attached to the pivot point, and when it is moved up or down, it rocks back and forth between the two positions, making contact with the internal electrical contacts and completing or breaking the circuit.

Rocker switches are available in various sizes, colors, and shapes, and they can be designed for use in different types of applications. Some rocker switches have a built-in indicator light that shows whether the switch is on or off, while others may have multiple positions, allowing for more than two options. Some rocker switches may also have a waterproof or dustproof design, making them suitable for use in harsh environments.