Photoelectric Sensors (Background Rejection, Tubular Style): Type - Photoelectric Retroreflective, Polarized Sensor; Sensing Range - 79" (2m); Voltage - 10-30VDC; Output Mode - Light Operate; Output Type - PNP; Construction Style - Tubular, Threaded; Diameter - 18mm; Sensing Position - End; Material - Thermoplastic; Response Time - 3ms; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP67; Temperature Rating - -40 to 70degC (-40 to 158degF)