One of the best light switch installation options out there these days is the dimmer switch. This is a device that controls the current sent to a light fixture, thereby allowing you to increase or decrease the amount of light in a room. The switch is actually a slow sliding lever or turn dial, which allows you to manually adjust the light. Dimmers are popular in new homes due to the fact that they are a step up from traditional switches.
Essentially, dimmer switches are used to replace the traditional single pole light switches used to control lighting circuits. These switches have only two controls — on and off — where power is either allowed to flow to the light or is turned off. With a lever or dial light dimmer, you are no longer relegated to these two options. Rather, you can increase or decrease on an incremental basis the current going to the load is attached to, giving you a much greater degree of control over your lighting.