The BCS M12K4D2-GSM80G-S04G (BCS0179) proximity sensor features a compact design with dimensions of Ø12×60mm, belonging to the M12 series. It utilizes non-flush installation and has a connector-type M12×1-male 4-pin interface. The device offers push-pull PNP normally open (NO) or NPN normally closed (NC) switching output options, with a switching frequency of 100Hz.