Whilst on holiday I had a problem with a false alarm that cost me money because an engineer had to be called out by the police.

I want to go on holiday without worry so am considering the following:

Unfortunately new dual-tech PIRs would have to face into the room towards windows. Am I likely to have false alarms in this situation.

Alternatively I could use only magnetic door contacts instead on the 3 internal doors. Would this give me almost 100% fail safe?

I would also have an autodialler to call my mobile.

Obviously an intruder could make their way into the property but would trigger the alarm as they moved through the house.

PS I have a separate query for a wirefree alarm. This is for a conventional alarm.

Thanks.

here in Coldshire we usually cure design faults ( PIR's facing towards windows) by installing DT's instead of PIR's.

but why would DT's HAVE to face windows? existing cables? two windows?

Many Happy Returns Mr James

Bet his DT is 'over ranged' and is picking up people/cars/creatures/snow/trees outside the premises.

Theres no such thing as a false alarm of course.

Bet his DT is 'over ranged' and is picking up people/cars/creatures/snow/trees outside the premises. 

Theres no such thing as a false alarm of course.

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..dual-tech PIRs would have to face ..