Comus mcs 142 aluminium wedge metal switch and magnet set with cable comus mcs 142 3 a loop type normally closed heavy duty magnetic contact switch in a short wedge shape extruded aluminium housing the switch has a 22 armoured cable and comes with a matching wedge shape magnet ideal for use as heavy duty door contacts for industrial and commercial applications in harsh environments comus mcs 142 3 aluminium wedge metal switch wedge magnet set with cable