Photoelectric Sensors (Background Rejection, Block Style): Type - Photoelectric Background Cutoff; Cutoff - 1.6 in (40mm) Cutoff; Voltage Range - 10-30VDC; Output Mode - Light/Dark Operate; Connection Type - Connector, 4-pin Pico; Connection Size - M8x1; Construction Style - Rectangular, Threaded Base; Sensing Position - Side; Optimum Range - 0.39"-1.60" (10-40mm); Response Time - 1 ms; Beam Type - Visible Red; Material - ABS; Enclosure Rating IEC - IEC IP65; Temperature Rating - -4 deg. to +140 deg. F (-20 deg. to +60 deg. C)