You pair it with the matching JST XH pin header (the board-mount side) and the correct crimp contacts, which you order separately because this is just the shell.
The listing flag says it plainly: contacts not included. You need the JST XH female crimp terminal (typically SXH-001T-P0.6 or similar, depending on your wire gauge) to populate the cavities. Ordering just the housing and wondering why you can't terminate wires is the most common call we get on this series. The housing itself is the same PA6 nylon body used across the XH range — same pitch, same latch geometry, same terminal cavity — so if you've worked with the 6- or 8-position version, this one behaves identically, just with one more or fewer cavities.
ROHS3 compliant, so it clears the regulatory gate for EU-market builds. No official second-source cross-reference on record; if you need a functional equivalent, it would have to match the 2.50 mm pitch, 7-position single-row layout, and PA6 housing — but that's a parametric match, not a JST-authorized substitute.