Guest jonboy Posted February 28, 2005 Share Posted February 28, 2005 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. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/5228-dual-tech-pir-versus-magnetic-contacts/ Share on other sites More sharing options...
Guest Posted February 28, 2005 Share Posted February 28, 2005 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? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/5228-dual-tech-pir-versus-magnetic-contacts/#findComment-42036 Share on other sites More sharing options...
Brian c Posted March 1, 2005 Share Posted March 1, 2005 Many Happy Returns Mr James If you don't know......ask. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/5228-dual-tech-pir-versus-magnetic-contacts/#findComment-42122 Share on other sites More sharing options...
CompostCORNER Posted March 1, 2005 Share Posted March 1, 2005 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. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/5228-dual-tech-pir-versus-magnetic-contacts/#findComment-42210 Share on other sites More sharing options...
Guest Posted March 2, 2005 Share Posted March 2, 2005 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. 42210[/snapback] ..dual-tech PIRs would have to face .. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/5228-dual-tech-pir-versus-magnetic-contacts/#findComment-42291 Share on other sites More sharing options...
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