Balluff's BES013Y (M08EE-NSC15B-S04G) is an 8 mm diameter inductive proximity sensor in a cylindrical M8 housing with flush‑mount capability and a 4‑pin S4 connector, designed for DC operation from 10–30 V. It delivers an NPN output in a normally open configuration, with a nominal sensing distance Sn of 1.5 mm and a guaranteed distance Sa of 0–1.2 mm, plus about 5% repeatability and 15% hysteresis. The stainless steel housing measures 8 mm across and 43 mm long, the active face is PA12, and the unit carries IP68 protection for challenging environments from -25 °C to +70 °C, with a maximum load current of 200 mA.
