WinCC OA V3.20, 25 operator station UI REDU. 25 operator station license for expanding a redundant WinCC OA - Server basic license. Includes: desktop UI, web client (ULC UX), dashboard with parameterization and control function (RW). Simultaneous connections of active UIs is counted. For a correct redundant server configuration, both WinCC OA Server licenses must be identical. Packages are counted cumulatively. Requires the option WinCC OA - Redundancy. - - email address for delivery is required.