optima xm alarm system not working after power cut?

Asked similar question as had problem few years ago and last Sunday 22nd June, no response from keypad and Zone 1 lit, I knocked it off from point and waited about an hour, put the point switch back on, after about a few minutes internal alarm sounded, I put code in and it was back to normal. Hope this is of some help to you.

William Bowen
June 2008

Remove all power, mains and battery for a couple of seconds and try again.
Sounds like you battery has gone

Roy
March 2008