For your Alarm read the book, it is quite clear you have to close ALL vents off otherwise the air flow can cause the alarm to activate.
In addition beware of microwaves as these can also set the alarm off.
DO NOT DEACTIVATE THE ALARM THE INSURANCE WILL NOT PAY OUT IF THEY FIND OUT YOU HAVE DONE THIS.
The alarm only activates for a short time, gives you time to see whats up.
[Edited by John V6 on 7/27/2005 7:57:33 PM]