Three Wire DC, Flush Mountable Inductive Proximity Sensor with Metal Sensing Face. This range of inductive proximity sensors from Pepperl + Fuchs are for use where a non-contact solution is needed to detect the presence of metal objects. These sensors are designed into stainless steel housing with a stainless steel sensing face to ensure a greater level of robustness. These sensors can be mounted into a panel in a flush position.. 18 mm diameter, 65 mm long threaded barrel 3 Wire DC output Pre-wired types have 2m PVC cable Plug-in types have M12 type connector