WinCC OA - 3,000-5,000 BACnetpack Patch Only Service. Allows the application of publicly available patches. Version upgrade requires the POS Versions Upgrade option. Runtime: 12 months. Must be purchased with a corresponding product. Billing takes place annually in advance. Automatic, chargeable extension by 1 year if not canceled 1 month prior to expiration. ***************************** Email address required for delivery.