Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Retroreflective; Sensing Range - 6.5ft (2m); Voltage Range - 10-30VDC; Output Mode - Light/Dark Operate; Output Configuration - NPN; Connection Type - Cable; Connection Size - 2m (6.5 ft); Construction Style - Compact, Rectangular; Sensing Position - Side; Response Time - 1ms; Beam Type - Visible Red; Material - Thermoplastic; Enclosure Rating NEMA - NEMA 1,2,3,3S,4,4X,6,12,13; Enclosure Rating IEC - IEC IP67; Temperature Rating - -4 deg. to +158 deg. F (-20 deg. to +70 deg. C)