... price 2013 factory manufacture Explosion Proof Corrosion Proof Control Unit Application: 1, Designed for Zone 1 ... control switch, with more advantages, such as compact structure, reliable quality, smaller volume, high capacity of turning on/ off, ... ExedIICT67,Ingress protection:IP658,Corrosion resistance:WF29,Product form: Control unit Electrical hoist button:Ingress thread specification : G3 ...