Banner FHDM 12N5001/S35A Photoelectric Diffuse Sensor w/Background Suppression. Photoelectric Diffuse Sensor with Background Suppression, 10-30VDC, 15-300mm Sensing Range, Light/Dark Operate NPN, -25 to +65°C, M8 4-pin Connector, IP67. Pulled from clean working environment. Guaranteed to be be in proper working condition.