12V Aluminum Metal Switch Power Logo Latching Push Button blue Led 18mm Button Diameter:10mm,Head Diameter: 18mm,Hole size required:16mm,Depth inc contacts: 36mm Switch Rating:6A/125VAC,LED Voltage: 12V only Latching type: Push it-- on,Push it again--Off LED built on it's own circuit,lighted when on. or could be wired to make it lighted alternate. Be widely used in various types of motor starting, power starting device, and can be also be a access control button.