WM2-Ex Explosion Proof Stainless Steel Safety InterlockIDEM’s WM2-Ex Explosion Proof Non Contact Switch is manufactured in Stainless Steel 316 with a mirror polished finish and has been designed to interlock hinged, sliding or removal guard doors or hatches. The WM2-Ex comes equipped with highly reliable power reed switching elements, contacts de-rated and protected by internal fuses with high tolerance to guard misalignment.All electrical switch..