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Light switch

Light switches are commonly used in the home and at the office. Light switches and their cover plates are available in a range of sizes, types and designs. Typically switches are mounted onto walls for easy access by those using electrically powered devices. Such switches are often mounted in the wall near a doorway, allowing a person to flip the switch to turn on the room lights. Light switches may also control other electrical appliances that are plugged into wall plugs or receptacles that are controlled by the switch. Two main types of switches are presently used in homes, offices, or other places to activate electrical appliances such as interior lights. They're toggle type switch and rocker-type switch. The function of these switches is essentially to provide ON and OFF positions and consequently to turn on or turn off the appliances so controlled. Dimmer switches are regulating devices used for varying the electric power applied to an electric load such as an electric light. More advanced electronic switches may include a motion sensor or infrared sensor to detect when a person is moving in a room. Thus the room lights appear to turn on automatically when a person enters a room. A timer may also be used to turn off the lights after a period of time without motion.

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