This BALLUFF BES 516-3019-S4-C inductive proximity sensor features a 4 mm detection range, operates at 10-30 VDC with 2500 Hz switching frequency. Equipped with M12 male 4-pin connector, PNP output and normally closed (N/C) contact configuration. Designed for non-flush mounting, it withstands temperatures from -40 to +85°C and has IP68 protection rating.