Through-beam type, Sensing distance 7 m, Light-ON/Dark-ON selectable, NPN, M12 connector models, Red LED (700 nm).Sensing methodThrough-beam typeSensing distance7 mLight sourceRed LED (700 nm)Connection methodM12 connector models.Sensing methodThrough-beam typeSensing distance7 mLight sourceRed LED (700 nm)Connection methodM12 connector models