Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective; Sensing Range - 79" (2000mm); Voltage Range - 12-24VDC; Output Mode - Light/Dark Operate; Output Configuration - NPN; Connection Type - Cable; Connection Size - 2m (6.5 ft); Construction Style - Rectangular; Sensing Position - Side; Response Time - 1ms; Beam Type - Infrared; Material - Die cast Zinc; Enclosure Rating IEC - IEC IP67; Temperature Rating - -25 to 55degC (-13 to 131degF)