A switch is used to make or break the electric circuit. Or it is used to switch “ON or OFF” the electric supply. The switches may be one-way switch and two-way switch. The one-way switch is used to control single circuit or lamp, where as the two-way switch issued to divert the flow of current to either of two directions. The two-way switch can also be used to control one lamp from two different places (As in case of stair case wiring). The different types of switches are available with us, depending upon the requirement,