And Shelly can keep connecting? No confusion that the 'shutter' is still going up or down?
Didn’t get the point exactly. What is the question? And yes - the Shelly 2.5 switches live potential via its two outputs to either one or the another terminal of the fan. It is ensured that both outputs cannot be activated simultaneously. In the WebUI or in the App the two switching options are represented as „up“ or „down“.