Re: PIR's: Why trip on two detects?

["BIG NIGE" <no.way@xxxxxxxxxxxxxxxx>]

"Frank Olson" <Use_the_email_links@xxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0CPhf.625211$tl2.260807@xxxxxxxxxxx
> Crash Gordon wrote:
> > Are you talking about Pulse count?...that's not quite the same as two
trips.
> >
> > I use pulse count all the time, the count I set it at depends on the
> > conditions of the room, harshness of the evironment, dogs, kids,
mirrors,
> > fans, fax machines, heat/cooling ducts etc.
>
>
> You're still using detectors that use "pulse-count"??  *Gasp!*

FRANK
The Majority of UK PIRs have Pulse count capability (usually adjustable 1 -
3).
The majority of UK Panels have no kind of sensitivity settings whatsoever.

Most systems are bells only and a large percentage of systems are installed
by electricians who are not registered with any alarm inspectorate and the
panels they use and systems they design are very basic.

Only the registered professionals can install Monitored Systems and being
registered also means that the Non Monitored systems installed have to be of
a higher standard too.

A surprising number of Installers (non registered) would not understand the
proper use of  such as "pulse count" "latching" "double knock" "anti
masking" "confirmation" "End of Line Resistors" "I.D chips - Bus System" in
some cases not even "series" & " parallel". I have come across many systems
that have been designed to suit the default programming because
re-programming is a foreign language. I am sure that many of the
Professional Installers will have some horrendous tales to tell on this
subject.

I for one discovered a Licenced premises where a six zone panel was
installed, only 2 zones used. Zone 1 entry exit timed on a door contact,
Zone 2 three PIRs and a door contact  covering the "valuables area" but all
4 were connected in parallel so the alarm would only trigger if the door and
three PIRs in separate rooms were triggered at the same time !!!!!!!!!!!!!!