Banner Engineering S18SN6LQ Photoelectric Sensor

Banner Engineering's S18SN6LQ is a polarized retroreflective photoelectric sensor from the S18 Series, housed in a compact 18 mm epoxy‑encapsulated barrel that enables easy mounting in tight spaces. It detects targets out to a 2 m range using an infrared LED and provides a 10–30 V DC supply with an NPN output that can be configured for LO (light operate) or DO (dark operate) via a 4‑pin M12 quick‑disconnect connector. The model is cataloged as 29511 and is described specifically as S18SN6LQ in retroreflective mode, making it a purpose‑built choice for reliable presence sensing on small machinery, conveyors, and packaging lines where space is at a premium. In addition to its rugged DC operation, the sensor includes protection against false pulses on power‑up and against continuous overload or short‑circuit of the outputs, helping maintain stability in demanding environments. This combination of a compact 18 mm epoxy body, 2 m sensing range, 10–30 V DC operation, NPN output, and M12 QD connectivity makes the S18SN6LQ a straightforward drop‑in for Banner’s S18 platforms and a solid option when a polarized retroreflective solution is needed.