Banner Engineering SM31RQDP 28551 Photoelectric Sensor

SM31RQDP (28551) is Banner Engineering’s M18‑mount Mini‑Beam receiver for a through‑beam photoelectric pair. It operates on 10–30 V DC and provides both NPN and PNP outputs (bipolar), with the option to select Dark‑ON or Light‑ON operation. The sensing range is 3 m (118 in), and the device uses an M12 quick‑disconnect pigtail lead (approximately 150 mm) for connection. Built for industrial environments, the housing is IP67 rated and rated for operation from −20 °C to 70 °C. As the receiver in Banner’s Mini‑Beam DC Voltage Series, SM31RQDP is designed to be paired with the corresponding emitter to form a through‑beam system, delivering reliable interruption sensing for applications such as part detection on conveyors, end stops, and position monitoring where a remote emitter creates a defined sensing beam.