Banner Engineering SM31EQD Photoelectric Sensor

Banner Engineering SM31EQD is a MINI-BEAM DC voltage emitter for through-beam photoelectric sensing. This self-contained emitter uses an infrared LED light beam and provides a 3 m sensing range when paired with a compatible MINI-BEAM receiver. It operates from 10 to 30 V DC and features a 4-pin M12 integral quick-disconnect (QD) connection for fast field wiring. The compact emitter is IP67-rated (NEMA 4X), making it suitable for harsh industrial environments and washdown applications. The SM31EQD denotes the 4-pin M12 QD variant of Banner's MINI-BEAM DC Voltage Series, which offers a rugged, compact form factor ideal for tight installations. Typical installations involve pairing the SM31EQD with a matching Banner receiver in a through-beam configuration to detect objects or parts as they pass between the emitter and receiver across a 3 m gap. As part of the MINI-BEAM family, this emitter is designed for quick integration into automation projects that require a durable, low-profile infrared photoelectric solution with straightforward power supply and no onboard output.