Banner Engineering SM312LVQD Mini-Beam Retroreflective Sensor

Banner Engineering's SM312LVQD Mini-Beam Retroreflective Sensor is a compact DC-powered photoelectric sensor designed to detect retroreflective targets up to 5 meters away, with a visible red LED sensing beam and non-polarized operation for reliable detection across varying reflectivity. It operates on a 10–30 V DC supply and provides bipolar outputs (one NPN and one PNP) through a 4-pin M12 integral quick-disconnect, simplifying wiring in typical control panels. The thermoplastic rectangular housing uses an M18 mounting interface for versatile installation, and the unit carries IP67 protection with a NEMA 4X rating for use in dusty or wet industrial environments. This Mini-Beam model supports light/dark operate modes and is tuned for retroreflective sensing in short-range applications, such as monitoring targets on conveyors or near machinery guards. A related variant, SM312LVQD-50939, offers a special short-range retroreflective option while maintaining the same electrical characteristics (10–30 V DC input, bipolar outputs, 4-pin M12 QD) and a 5 m maximum sensing distance for the base model.