The StreamInsight Extensions for OPC Data Client are licensed together with OPC Data Client. You must obtain an appropriate license to use it in development or production environment. The StreamInsight Extensions are licensed together with Reactive Programming Model, and therefore your license must include this programming model in order for you to be able to use the StreamInsight Extensions.

For evaluation purposes, you are granted a trial license, which is in effect if no other license is available. With the trial license, the components only provide valid OPC data for 30 minutes since the application was started. After this period elapses, performing OPC operations will return an error. Restarting the application gives you additional 30 minutes, and so on. If you need to evaluate the product but the default trial license is not sufficient for you purposes, please contact the vendor or producer, describe your needs, and a special trial license may be provided to you.