Banner Engineering SM31ELQDP is a MINI-BEAM opposed-mode photoelectric emitter used in industrial sensing to project a long-range infrared beam between emitter and receiver. It operates on 10–30 V DC and provides a 30 m range; the 4-pin Euro QD connector is standard, with the QDP suffix indicating an accompanying 150 mm (6 in) Quick Disconnect cable. As the emitter half of an opposed-mode pair, it is designed to pair with Banner MINI-BEAM receivers to detect beam interruptions across conveyors, gaps, or machine guards. This model is cataloged as SM31ELQDP (29535) and is part of Banner's DC-powered MINI-BEAM sensor family.
