Illuminated Rocker Switches have a built in light to provide indication of your circuit operation. All of our illuminated rocker switches are designed to operate at 12 volts DC, expect for the illuminated appliance rocker switches, which operate at 120 volts AC. These rocker switches are available in various colors and have an extra terminal for grounding the indicator light. Most of the switches are available in an ON-OFF configuration, and depending on how you wire the in and out connections, can provide constant illumination, or only illuminate when the switch is activated to provide visual feedback about the operation of the rocker switch. Please watch our video on how to wire an illuminated rocker switch.