Hello…!
I recently purchased a house that came with a deactivated ADT Honeywell alarm system that I am trying to reactivate and connect to alarm.com.
I do not know the prior owners installer or master codes, and have tried the default codes (4112 and 1234, respectively) and they did not work. I also tried powering down and using the backdoor method, but they did not work.
So I am looking for what I should try next? There are two keypads and they both say “Disarmed Ready to Arm” and that’s it. Help!
Also, I have ordered the SEM through Surety, but it has not arrived yet.
Thank you