Photoelectric Sensors (Background Rejection, Tubular Style): Type - Inductive Proximity, General Purpose Sensor; Sensing Range - 8 mm; Voltage - 20-253V AC; Wires - Voltage Type - 2-Wire AC; Shielding - Unshielded; Output Mode - N.O.; Connection Type - Connector, 3-pin; Connection Size - 7/8-16UN; Construction Style - Tubular, Threaded; Diameter - 18 mm Dia.; Material - Nickel Plated Brass; Enclosure Rating IEC - IEC IP67; Switching Frequency - 20 Hz; Load Current - max - 200 mA; Temperature Rating - -25 deg C (-13 deg F) to F470 deg C (158 deg F); Material - Face - Nonmetallic