These contact activated low Amps footswitches are suitable for 12 and 24 Volts with the use of a solenoid control box. The compact design requires only a small 1/4" hole opening in the deck for the wires to pass through, making them perfect for compact installations.Contact activatedHinged coverStainless bezelDonut style cover allows fingertip operation1/4" deck cutout for wiresSupplied with fasteners3-5/16" diameter round (3-15/16" hinge to thumb tab)