Photoelectric Sensors (Background Rejection, Block Style): Type - Ultrasonic Sensor; Sensing Range - 1400mm (55.11"); Voltage Range - 12-24V DC; Output Configuration - Bipolar, NPN/PNP; Connection Type - Cable; Connection Size - 2m (6.5 ft); Construction Style - Rectangular, Threaded Base; Sensing Position - Right Angle; Response Time - 20, 40, 160, 640 ms (programmable); Material - PBT Polyester; Enclosure Rating NEMA - NEMA 6P; Enclosure Rating IEC - IEC IP67; Switching Frequency - 128 kHz; Temperature Rating - -25 to 70degC (-13 to 158degF); Nominal Dimensions - WxDxH 1.75x3.12x3.45" (44.5x79.4x87.6mm)