Photoelectric Sensors (Background Rejection, Tubular Style): Type - Photoelectric Background Cutoff Sensor; Cutoff - 4.00 in (100mm) Cutoff; Voltage - 10-30VDC; Output Mode - Light/Dark Operate; Output Type - NPN; Connection Type - Connector, 4-pin Euro; Connection Size - M12x1; Construction Style - Tubular, Threaded; Diameter - 18 mm; Sensing Position - End; Material - Thermoplastic; Response Time - 3ms; Beam Type - Infrared; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP69K; Temperature Rating - -40 to 70 deg C (-40 to 158 deg F)