The Balluff BES00EF (BES M12ME-PSC40B-S04G-003) is a compact M12 flush‑mount inductive proximity sensor delivering a 4 mm sensing distance and PNP normally‑open output for precise metal detection in automated machines. Measuring Ø12 × 45 mm with an M12x1 male, 4‑pin connector, it operates on 10–30 VDC, switches up to 2.5 kHz, and carries a robust IP68 rating for reliable performance in demanding environments. Built with a nickel‑free coated brass housing and PBT sensing face, the BES00EF withstands −25…70 °C and meets CE/UKCA/cULus approvals—ideal for cost‑effective, contactless sensing on conveyors, packaging lines, and assembly stations.