6AV6355-1AA47-7DL4Brand: SiemensMPN: 6AV6355-1AA47-7DL4WinCC OA V3.19, 3,000 BACnet objects. Expansion of a single WinCC OA Server license by 3,000 BACnet objects. Requires WinCC OA BACnet. For a correct redundant sRequest a quote