Photoelectric Sensors (Background Rejection, Tubular Style): Type - Ultrasonic Sensor; Sensing Range - 200mm (7.87"); Voltage - 20-30V DC; Output Type - PNP, NO; Connection Type - 4-pin Euro; Connection Size - M12X1; Construction Style - Cylindrical, Threaded; Diameter - 18 mm; Sensing Position - End; Material - Brass, Nickel-Plated; Enclosure Rating IEC - IEC IP67; Switching Frequency - 400 kHz; Temperature Rating - -25 to 70degC (-13 to 158degF)