the basic function of light switch is open and close an electrical current running from a building or a home’s electrical panel. A simple switch is used to control electric lights and other electrical devices and appliances that are either hardwired or plugged into an electrical outlet.

There are several types of light switches: the single pole light switch, the double pole light switch,3-way light switch, 4-way light switch, timer light switch, sensor light switch,intermediate light switch, staircase light switch,dimmer light switch,touch light switch also called a tactile light switch, smart light switch.