Allen-Bradley - Thru Beam Rx - 42CSS-R9MPB1-D4

Photoelectric Sensor, Cylindrical Style, Transmitted Beam Receiver, 20-20 m Sensing Range, Light Operate - Dark Operate Output, PNP Output, Smooth Barrel, 18 mm Barrel, 4 Pin Micro M12 Integral Quick Disconnect Connector, Without Sensitivity Adjustment, 42CS