Unmonitored ADT alarm beeping
Hello,
We have an old, now unmonitored ADT alarm that was in the house when we moved in several years ago.
We have been using the alarm system as a regular unmonitored set-up fine until 2 days ago.
Distracted by the kids, I accidentally typed in some numbers on the key-pad, which weren't my code. I 'escaped' this code to set the alarm properly - and that was fine.
However, now when we walk past certain (but not all) PIR sensors in the house the ADT keypad beeps.
I can't think what on earth I did to do this, and can't find any way of fixing it - please help!
Thanks,