Does a nitrogen cabinet need a nitrogen supply on site?

Yes. A YSN cabinet works by displacing oxygen with nitrogen, so it needs a nitrogen line available at the installation point. The cabinet itself still dehumidifies to 1–60% RH, so it remains a humidity-controlled store even between purges. Tell us your available supply (purity, pressure, whether it is already piped to the location) when you enquire and we will confirm the connection requirement for the model you are considering.