The answer to 'what is dimmer switch' is a type of electrical switch that allows you to adjust the brightness of lights in your home. Dimmer switches work by regulating the amount of electrical current flowing to the light fixture, which in turn controls the brightness level. This allows you to create the perfect lighting ambiance for any room or situation.
Dimmer switches are commonly used with incandescent and halogen light bulbs, but can also be used with some LED and CFL bulbs. They come in a variety of styles and designs to match your home's decor, and are relatively easy for most homeowners to install with basic electrical skills.