Rocker switches are on/off devices that rock (rather than trip) when pressed, which means one side of the switch is depressed while the other side is raised. You can find an on/off rocker switch in many consumer electronics and household appliances. They're used for their low cost and simple mode of operation. Rocker switches are an example of the wide range of electrical switches and other electromechanical parts you can access using PoOnHand to browse well-known manufacturers like Honeywell.