Lately the alarm has been going off even when it is not set. The 24hr red light is highlighted. This can be related to switching on the oven, turning on a lightswitch but also happens when we're sleeping at night. Can anyone tell me what might be the problem?
I took the panel off. The battery is 2years old. It says rechargeable but I disconnected it and turned the mains off and the alarm still sounded. HELP it's driving me mental and I only want to pay alarm company as last resort!

MITCH, July 2012

SD Does it mean Stoopid Dirk?

Alarm, July 2012

any one would think you where an expert ,with years of experience :-)

gts, July 2012

acorn ,how dare you doubt the word of sd?i mean

gts, July 2012

"Did it sound when you switched the mains off, with battery connected, if not battery ok."

How do you work that out then? Is this a new way of testing a battery that I don't know about?

SD, please point me in the right direction to read up on this method, not one I know, so willing to learn.

acorn, July 2012

As it went off when you switched it off and unplugged battery, shows that the battery in the outside unit is working, Did it sound when you switched the mains off, with battery connected, if not battery ok. As it shows 24hr alarm, that is the tamper cct, So check all the units door sensors etc you must have a bad connection somewhere, Could be a cover on a movement detector, or corroded connections on a door unit, if any water has got in with the bad weather. If all else fails, disconnect battery and mains supply again, the battery in the outside unit will then sound off the unit, but will run the battery down, which will stop it completely, until you get it sorted.

SD, July 2012