The Telemecanique XS4P30PA370B is an inductive proximity sensor in the XS4 series, sensing 15 mm with a PNP normally open output. Rated supply voltage 12–48 VDC, switching up to 200 mA, housed in a plastic M30 cylindrical body rated IP68. Connection is a 3-wire cable.
The referenced peers XU2M18MC230KT, XU2M18MB230, and XU8M18MB230K are photoelectric sensors, not inductive proximity. They operate on a 2-wire AC/DC supply and detect light beams, not metal targets. The XS4P30PA370B requires a 3-wire DC PNP connection and will not drop into a panel wired for photoelectric sensors without rewiring.