With a extremely odd behaviour with these curtains switchs.
I have bought a dozen of these guys to make dumb shutters smart. I installed one and configured it (calibrated) by using the calibration method.
Even though not perfect it was working until 10 minutes passed… Strangely enough even though no instruction was given to the switch in the home assistant the statis changes from closed to open, it does not trigger the shutter but makes it useless to use in automation besides induces in error.