Rating:12V/DC. 30A.3 PINS WITH LED lamp ， ON /OFF [ SPST ]THE fluorescent lamp 's WILL TURN ON WHEN YOU TURN ON THE SWITCH.FEATURES:Easy setup. 31mm x 19mm hole， 12mm diameter [ cut size for the tighten screw ] is required and the switch will sit in nicely; don't need to cut outs. The switch comes with a keyhole slot to prevent unwanted rotation. Blue fluorescent lamp 's will be lighted up when the switch is turned on. 2 pole design (On/Off) ， 3rd poles with LED to be connected to earth. Main technical characteristics:Name ASW-20D blue 12V LED illuminated car led switchDiameter 12mm diameterMaterial nylon materialLamp led lampSwitch function on-offRated voltage 12VDC 30AContact R 50m ohm maxInsulation R 500VDC 100 ohm min Operating temperature -25 to 85 Package Include:5 X Yellow LED Switch