I own a ADT Safewatch 3000 (Vista 20P). It is working fine.
What happens if I am gone for a few weeks, when the AC power is off and the backup battery has lost its power, too.
Assuming that the AC will not be restored while I am absent, will the panel lose all programming? That would be expensive to reset when I return!
What prevents the panel from losing programming?
Thanks for any insights.