I’m planning to buy an opener and i’m not sure about the compatibility of the Tonna 682526.
I saw that it might be compatible with a two wires : Opener configuration with 2 wires Tonna
Here is a picture of the printed circuit board, it’s seem to be and digital system.
From right to left : DC, AUDIO, VIDEO, RE???
If there is no solution, any idea of a video intercom that i could buy to replace the Tonna one ?