Mounting hole size: 19mm; Head Diameter: 22mm | Latching switch: Push-ON; Push it again-OFF | Shell Metarial: Zinc aluminum alloy(waterproof and dustproof degsain) | Switch rating: 5A/250V AC; LED rating: 15mA, AC/DC 12V; The switch and LED are separated, LED can be on all the time or only on when switch is on,depending on how you wire it. | Latching Push Button Switch can be applied to car motorcycle modificine ,electric equipment ,appliance,machine ,home Lamps and so on