Photoelectric Sensors (Background Rejection, Tubular Style): Type - Photoelectric Diffuse Reflective Sensor; Sensing Range - 3.94" (0.1m); Voltage - 10-30VDC; Output Mode - Dark Operate; Connection Type - Cable; Connection Size - 6.5ft (2m); Construction Style - Tubular, Threaded; Diameter - 18mm; Sensing Position - End; Material - Plastic; Response Time - 2.5ms; Beam Type - Infrared; Enclosure Rating NEMA - NEMA 1, 2, 4; Enclosure Rating IEC - IEC IP67; Temperature Rating - -25 to 55degC (-13 to 131degF)