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?
dse ha-873 house alarm triggers with lightning
Feb 26, 2007
6 Replies
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 :)
Have you checked the condition of the back up battery? Very common problem.
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.
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.
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)
A decent alarm more likely
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