The Balluff BES00PY (BES 516-325-G-E5-C-S4) is an M12 flush‑mount inductive proximity sensor with a 4 mm sensing distance and PNP normally‑open output, engineered for reliable metal detection in industrial automation. Compact at Ø12 × 45 mm and built to last with a nickel‑free brass housing and PBT sensing face, it operates on 10–30 VDC, switches up to 2.5 kHz, and carries an IP68 rating for durable performance in harsh environments. An M12x1 male connector simplifies installation, while a −25…70 °C operating range and CE/UKCA/cULus approvals make it ideal for conveyors, packaging lines, and assembly stations seeking dependable, contactless sensing.