The BCS M12B4G2-NSC40D-S04K (BCS00P2) is a cylindrical inductive proximity sensor with dimensions of Ø12 x 75 mm, featuring M12x1 male thread for flush mounting. It has a 3-pin connector configuration with NPN normally open (NO) switching output, operating at 100 Hz frequency. The sensor offers a detection range of 1-4 mm with adjustable sensitivity.