Siemens Illuminated Selector Actuator offers a highly visible and versatile interface that is used for controlling your machines. It can easily be installed into standard-size cutouts and connected to the control circuits with simple screw clamp connections. Siemens Illuminated Selector Actuator has a button that is used for operation and can be pressed on either like a seesaw to disconnect and connect an electrical circuit. These are often used as ON/OFF switches on the main power supply for electronic.