ObixHistoryImport is a “history import descriptor” child of the ObixHistoryDeviceExt (Histories extension of an ObixClient or R2ObixClient), and corresponds to a history (log or trend) on the oBIX server.

For details specific to an R2ObixClient, see the “R2ObixClient Histories (logs and archives)” section in the engineering notes document Niagara R2 to NiagaraAX via oBIX.