Keyence LR-W500C Self-Contained Full-Spectrum Sensor, M12, 30-500mm

M12 connector 4-pin type. 30 to 500 mm. ø18 mm at 500 mm. NPN open collector/PNP open collector selectable. 120 mA or less (without load) at 12 VDC 3. Relative humidity. Light source. Up to 2 units when alternate frequencies set.