For some reason our alarm was attached to the light fuses and not the electricity ones, so when I needed to turn off the power to the lights in my bedroom it turned the power off momentarily to the alarm. It won't now reset and bleeps every 5 seconds. The main alarm is not sounding and the box outside isn't flashing. Do you know how to reset it...none of the buttons appear to be working!

Allie Bruce, November 2009

it needs a new battery, good battery, at good price Srcewfix Direct.
To put new battery in you MUST remove old battery first and turn off power to Alarm for 2mins, you MUST turn mains power first, leave mains on for 1min, put in new battery, put cover back on and try alarm.
If its still lockup repeat the above it till unlocked.
REPLASE BATTERY EVERY 3 YEARS.

Joe, Alarm Engineer., November 2009