Banner Engineering Corporation SM91RQDH DC Scanner 4 Pin

The Banner Engineering SM91RQDH is a DC-powered scanner in Banner's SM91 family, designed for reliable object detection on industrial equipment and production lines. It uses an integral quick‑disconnect connection with a 4‑pin M12 plug, simplifying field wiring and enabling compact, rugged mounting in demanding environments. The model name indicates a standard DC scanner configuration, and Banner lists SM91RQDH as a released item in its Industrial Automation catalog. This variant is specified as not intrinsically safe, aligning with typical non‑hazardous industrial installations. With the 4‑pin M12 quick‑disconnect interface, the SM91RQDH supports straightforward integration into Banner systems and compatible controllers, allowing quick replacement or reconfiguration as production needs evolve. In practice, it serves as a compact sensing device for detecting presence or absence of objects in automation tasks, contributing to line control and process efficiency where a DC-powered scanner is appropriate.