Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Diffuse Reflective; Sensing Range - 3.2ft (1m); Voltage Range - 12-24VDC; Output Mode - Light/Dark Operate; Output Configuration - NPN; Connection Type - Connector, 4-pin; Connection Size - M8x1; Construction Style - Compact, Threaded Base; Sensing Position - Side; Response Time - 1ms; Beam Type - Infrared; Material - PBT; Enclosure Rating IEC - IEC IP67; Temperature Rating - -25 to 55degC (-13 to 131degF)