Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective; Sensing Range - 6.6ft (2m); Voltage Range - 12-24VDC; Output Mode - Light/Dark Operate; Output Configuration - NPN/PNP; Connection Type - Cable; Connection Size - 2m (6.5 ft); Construction Style - Rectangular; Sensing Position - End; Response Time - 1ms; Material - Die Cast; Enclosure Rating NEMA - NEMA 1,4,4X,12,13; Temperature Rating - -25 to 55degC (-13 to 131degF)