This is a pack of five (5x) power switches with a DC12V LED light built-in.
Power Rating - 8A at 250V AC
3 Pole:
Gold=Ground, Center=12V LED, Last one=on/off
Mounting hole: 30mm x 10mm
Note: the built-in LED works with DC 9V~12V only. Do not use this option if used on high voltage (over 24V) application.