The Balluff BES05F0 (BES M12MI-PAC40B-S04G) is a robust M12 inductive proximity sensor built for reliable metal detection in tight industrial spaces, combining a compact Ø12 × 65 mm form factor with flush mounting for easy, space‑saving installation. Delivering a 4 mm sensing range, PNP NO/NC switching, and a 4‑pin M12 quick‑connect on 10–30 VDC, it integrates seamlessly with PLCs and machine controls for fast, maintenance‑free object detection. Its durable brass housing and PBT sensing face achieve IP68 protection and dependable performance from –25 to +70 °C, with CE, UKCA, and cULus approvals—ideal for conveyors, robotics, packaging lines, and general automation.