Photoelectric Sensors (Background Rejection, Tubular Style): Type - Photoelectric Diffuse Reflective Sensor; Sensing Range - 12" (300mm); Voltage - 20-250VAC; Output Mode - Dark Operate; Output Type - SPST Solid State Switch; Connection Type - Connector, 4-pin Micro AC; Connection Size - 1/2-20UNF; Construction Style - Tubular, Threaded; Diameter - 18mm; Sensing Position - End; Material - Thermoplastic; Response Time - 16ms; Beam Type - Infrared; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP69K; Temperature Rating - -40 to 70degC (-40 to 158degF)