Ultrasonic Sensors (Reflex-Reflective, Tubular Style): Type - Inductive Proximity, General Purpose Sensor; Sensing Range - 5 mm; Wiring, Volts - 2-Wire DC; Voltage - 8V DC; Shielding - Unshielded; Connection - Cable; Connection Size - 5m (16.5 ft); Output Mode - NAMUR, N.C.; Diameter - 11 mm Dia.; Construction - Tubular, Threaded; Beam Type - 3000 Hz; Material - Stainless Steel Nonmetallic; Enclosure Rating IEC - IEC IP68; Temperature Rating - -25 deg C (-13 deg F) - 100 deg C (212 deg F); Manufacturer Series - Classic