SAFETY LIGHT CURTAINS S4B TYPE 4 SAFETY LIGHT CURTAIN, EMITTER; RESOLUTION: 30 MM; RANGE: 12 M (40 FT); DEFINED AREA: 1350 MM (53.1 IN); HOUSING: BLACK; CONNECTION: REMOVABLE DISCONNECT (RD); MOUNTING HARDWARE AND CORDSET/M12 PIGTAIL ORDERED SEPARATELY