I have a customer with a fully functioning Focus 75. I am trying to find out if it can be monitored with a cellular communicator.
Should be able to. A cell communicator can answer any call regardless of what the alarm is trying to dial. Assuming you’re using phone lines already that is. I’m not sure what programming may be required for the cellular to handle the call and “communicate” with the ADT, but I’d imagine someone who knows more about programming cellular communicators than I do would know that inside and out.