Photoelectric Sensors (Thru-Beam, Tubular Style Light Source): Sensor Type - Photoelectric Thru-Beam Source; Sensing Range - metric - 20ft (6m); Sensing Range - standard - 20ft; Voltage - 10-30V DC; Connection Type - Cable, 2 m (6.5 ft); Receiver Model - 12155Rxx; Construction Style - Tubular w/Flat Sides, Threaded; Sensing Position - Right Angle; Material - Polyurethane; Enclosure Rating NEMA - NEMA 1,2,3,4,4X,6,6P; Manufacturer Series - Prism