@Alvaphonepro: Thanks for the hints ! I´m going to try and use the doorphone #2 input. And so far I haven't the KSU resetted, going to try that.

As soon as I've done those, will let you know !

Now, thankfully my experience with the pet scanners lies on the pcb side of the counter. I'd rather inspect the unit than have it inspecting myself !

Defeating Hodgkin's is by no means a small feat ! These are the kind of imagery that scares the hell out of me ! Congratulations and please, hope you stay very far away from the scanners !