Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Convergent; Sensing Range - 1.5 in. (38mm); Voltage Range - 10-30VDC; Output Mode - Light/Dark Operate; Output Configuration - NPN/PNP; Connection Type - Connector, 4-pin Mini; Connection Size - 7/8-16UN; Construction Style - Rectangular, Threaded Base; Sensing Position - Side; Response Time - 4ms; Beam Type - Visible Red; Material - Thermoplastic Polyester; Enclosure Rating NEMA - NEMA 1,3,4,12,13; Enclosure Rating IEC - IEC IP66; Temperature Rating - -4 deg. to +158 deg. F (-20 deg. to +70 deg. C)