How it compares to the XS1M18MB250K
The XS1M18KP340L1: The XS1M18MB250K is a wider-voltage sibling (24–240 VAC / 24–210 VDC) with a 2-wire NC output and a 3-pin micro connector. The seed part is strictly 48 VDC, 200 mA, and from the order code appears to be a different output variant (possibly NO or with a different termination). If your panel was wired for the AC/DC version, expect a wiring change — the connector and output logic are not identical.