I think I know why it didn’t work. I didn’t connect the black cable as it was marked optional. But after looking at the PCB, it seems that the opener can only detect DC signal against black, so I will now test it again with black connected.
I think I know why it didn’t work. I didn’t connect the black cable as it was marked optional. But after looking at the PCB, it seems that the opener can only detect DC signal against black, so I will now test it again with black connected.