I am playing with the Nuki Opener to see if I can get it working by wiring it directly into an BUS intercom (SKS) that is currently unsupported. I am trying to use the Generic Analoge profile. Now connecting the opener itself is fairly easy to the “open button”, but what I struggle with is the ring detection. Apparently from what I read here, Nuki is looking for an AC signal on the ring line. In the BUS intercom system, I connected it to a LED that blinks when a ring is detected. Unfortunately, this only triggers the ring detection once in a while, maybe <20% of the times. So my question would be if it would be possible to get the opener also detect a ring on a solid 5V signal.