We had these alarms installed in every room of our house after the loft conversion was done 1.5 years ago. Last night at 2am all the alarms went off and then stopped suddenly before we got to press the button. No trigger found. It scared the life out of my children and we couldn't sleep for the rest of the night worrying about them doing this again. I can't find a reason why this happened. They are still new and don't need replacing till 2020(says on the alarms) and batteries are not replaceable. They were all installed by a qualified electrician and it's never happened before. Any idea why this happened and how to make sure this nightmare will not happen again?
