Photoelectric Sensors (Background Rejection, Block Style): Type - Ultrasonic Sensor; Sensing Range - 500mm (19.68"); Voltage Range - 12-30V DC; Output Configuration - NPN, NO; Connection Type - Cable; Connection Size - 9m (30 ft); Construction Style - Rectangular, Threaded Base; Sensing Position - Side; Response Time - 15 ms; Material - ABS; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP68; Switching Frequency - 300 kHz; Temperature Rating - -4 deg. to +140 deg. F (-20 deg. to +60 deg. C); Nominal Dimensions - WxDxH 0.59x1.32x1.36" (15x33.5x35mm)