dse ha-873 house alarm triggers with lightning

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lentildude Contact options for registered users 's Avatar (by Gravatar) posted on
February 26, 2007, 11:08 pm
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My dse house alarm in the unarmed state triggers with close
lightning. Happened twice during electrical storm overweekend in
Sydney.   I figure the cables that run to speakers, close loop, pir,
power all act as antennas and lightning is inducing a voltage in gnd
line.   Has anyone else had a similar problem?


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David L. Jones Contact options for registered users 's Avatar (by Gravatar) posted on
February 27, 2007, 12:41 am
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Re: dse ha-873 house alarm triggers with lightning


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Nothing worse than an unreliable alarm panel. I'd ditch it at the
first sign of trouble like this and get a better name brand panel.

Dave :)


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Two Bob Contact options for registered users 's Avatar (by Gravatar) posted on
February 28, 2007, 9:16 am
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Re: dse ha-873 house alarm triggers with lightning


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Have you checked the condition of the back up battery? Very common problem.



lentildude Contact options for registered users 's Avatar (by Gravatar) posted on
March 2, 2007, 6:40 am
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Re: dse ha-873 house alarm triggers with lightning


I have the alarm running of a pc ups,  with its own battery.   Supply
voltage isnt the issue,  emf somehow seems to be the culprit.


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Jonno Contact options for registered users 's Avatar (by Gravatar) posted on
March 2, 2007, 8:07 am
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Re: dse ha-873 house alarm triggers with lightning


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Also check the suppression of the trip wires.
Can they be earthed somehow?
A mate of mine was always getting his kicks when he keyed his
transmitter and he set of certain alarms in certain areas.


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atec 77 Contact options for registered users 's Avatar (by Gravatar) posted on
March 2, 2007, 9:01 am
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Re: dse ha-873 house alarm triggers with lightning


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it's either normal the alarm filtering is crap or the pir's , either way
it needs some filter caps installed. ( or a decent alarm)

Two Bob Contact options for registered users 's Avatar (by Gravatar) posted on
March 2, 2007, 11:09 am
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Re: dse ha-873 house alarm triggers with lightning


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A decent alarm more likely



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