Square D,LIMIT SWITCH 600V 10AMP TYPE L +OPTIONS,0...200 .F,2-Pole Double Break (Isolated Contacts),20 A,4 Pin (Male) APL/PL-SWTS (Cannon# MS3102E20-4P-F79 or equal) Screw Clamp,600V,L100,severe duty,Limit Switch,Momentary,NEMA 1/4/13,NEMA A600/P600,Panel,UL Listed File Number 42259 CCN NKCR - CSA Certified File Number LR25490 - Class 3211-03 - CE Marked,two circuit - single operation