The BES M18MG-PSC16F-S04K is a discontinued inductive proximity sensor featuring a connector type design with M12x1 male thread and 4-pin configuration. It operates at 10-30 VDC with a switching frequency of 800 Hz, normally open (NO) contact. This model has been replaced by BES M18MG-PSC16F-S04G (BES03RM).