Banner Engineering SM31RQD Mini-Beam Photoelectric Sensor

The Banner Engineering SM31RQD Mini-Beam Photoelectric Sensor is the receiver in Banner’s compact MINI-BEAM through-beam system, delivering up to 3 m of detection range when paired with a compatible emitter. It operates on 10–30 V DC and provides a bipolar output (1 NPN and 1 PNP) for flexible PLC interfacing, with a 4‑pin M12 integral quick-disconnect connector for easy wiring. The infrared sensing beam is emitted by the partner emitter and the receiver’s input is protected by an IP67 enclosure and NEMA 4X rating, making it suitable for dusty or wet environments. This model is the receiver unit and is designed to work with Banner amplifiers and other MINI-BEAM components to form a complete sensing solution. Typical applications include part presence detection on conveyors, object sensing in compact automation cells, and boundary monitoring along production lines where a small footprint and reliable signals are required. The suffix “QD” denotes the quick-disconnect wiring option, enabling fast field installation, while the 3 m range and infrared beam provide precise, non-contact detection for industrial automation tasks.