my alarm and outside bell was installed around a year ago.the engineer told me that i needed to change the battery as it was rubbish.
i did not change it though and the alarm was working fine.
a few weeks ago the alarm switched on in the middle of the night and it has been doing this on and off.
i decided to change the battery last week.But the alarm still swithes on at night.roughly 1 of 3 night it will play up around 2-3 am.
i use only 2 zones,zone1 covers all entry points downstairs and zone 2 is for a single PIR upstairs.
sorry for lengthy post.
your help is appreciated
thanks in advance
ed

ed, November 2011

As you've given NO information about the fault indication that shows when this happens I/we can't help.

acorn, November 2011