samboy Posted October 11 Report Share Posted October 11 Hi gang. My alarm went off twice in the night and it wasn't activated. I typed the code in and it stopped. The voice box kept saying short short short and on the panel it was flashing garage. But i can't understand if it wasn't switched on why did it go off. Quote Link to comment Share on other sites More sharing options...
Keith RW Posted October 11 Report Share Posted October 11 I would imagine that if its a mains powered house alarm with a battery back up that it can still react and activate if being tampered with or if it develeps a fault even when the alarm is not set. I have found that micro switches on the exterior bell covers are often the culprit, removing interior sensors for decorating also sets mine off and requires the code inputting to cancel the alarm. Quote Link to comment Share on other sites More sharing options...
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