The Schneider Electric XS1N05PA310 is an inductive proximity sensor from the XS1N series. It is designed to detect the presence or absence of metallic objects (primarily ferrous metals like steel) without physical contact. This specific model features a 5 mm shielded (flush-mountable) cylindrical housing, an NPN Normally Open (NO) output configuration, and a 3-wire DC operation (10-30 V DC).