MS-424M MOUNT TYPE:SURFACE MOUNT WITH SCREW SIZE:105.7L X 50W X 50W mm CONTACT TYPE:N/O FOR CLOSED LOOP SYSTEM CONTACT RATING:MAX. SWITCHING CURRENT: 0.5 Amp VOLTAGE:130 VDC RATING POWER: 20 W OPERATING GAP:65mm-75mm MAGNET:NEODYMIUM LEAD WIRE:22 AWG, LENGTH 40mm WITH STAINLESS STEEL AMOURED CABLE HOUSING:ZINC ALLOY RECOMMENDED:FOR STEEL OR OVERHEAD DOOR USE