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Posted by r_mervart on December 21, 2005, 7:29 pm
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>
> > If the two zones that are false alarming are PIR's then the first thing
> that
> > springs to mind is a power problem. If the voltage to the PIR's drops
> below
> > its threshold then they will go into an alarm condition. There are a few
> > reasons why this might have suddenly started happening but I would check
> the
> > age of the control panel standby battery first as if its on way out then
> it
> > can cause power problems to detection devices. Check with a multimeter
the
> > voltage and charging current.
> >
> You need to check the battery voltage whilst the battery is under load.
>
I was thinking about what does that actually mean in practice. First, I can
only suggest
things to do, because it is not my alarm system. Secondly I think the system
was
"upgraded" by a local company not so long ago and so my neighbour should
really get them to sorted it out but, as I said, on the first visit they
could not find
anything wrong.
Once you unscrew the panel there is also the complication of a protection
circuit etc.
Without unscrewing the front cover, I presume, one will not be able to get
to the battery,
do any test loading and measuring at the same time/.
Roman
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