RE: Re: Alarming the garage

["Ward, David" <David.Ward@xxxxxxx>]

The ones that I have (pyronix IIRC bought from farnell) req. both microwave
and PIR to be in 'alarm' before the relay activates.  They have three LEDs
on the front one for microwavve, one for PIR, and one for alarm  it makes
them easy to walk test.

One is mounted in a living room that has an attached 'hot house'
(conservatory) - touch wood no false alarms yet,  I wouldn't have trusted a
PIR alone to cope with the haet from the conservatory circulating in the
room.

HTH
Dave


-----Original Message-----
From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
Sent: Tuesday, September 09, 2003 12:49 PM
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Re: Alarming the garage


Hi Paul


>I thought that the point of dual tech sensors was that >they only
trigger
if BOTH microwave and PIR have been >triggered  - meaning the microwave
and
branches bit will >not matter unless the PIR triggers falsely at the
same
>time?

Havent installed / played with them in a long time but from memory they
also
will alarm if say there is more than one hit on the same sensor ie 2 hits
>from
alarm which one was the culprit....and i bet the microwave sensitivity gets
turned to minimum on a lot of sensors........

Frank

----- Original Message -----
From: Paul Gale
To: ukha_d@xxxxxxx
Sent: Tuesday, September 09, 2003 9:22 PM
Subject: RE: [ukha_d] Re: Alarming the garage


I implemented a 'multi tap' scheme with a number of my PIR sensors in
Comfort due to some false alarms. If a sensor triggers it will only cause
an
alarm if the same or another sensor triggers within an hour. Works well.

I thought that the point of dual tech sensors was that they only trigger
if BOTH microwave and PIR have been triggered  - meaning the microwave and
branches bit will not matter unless the PIR triggers falsely at the same
time?
Paul.

-----Original Message-----
From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
Sent: 09 September 2003 11:42
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Re: Alarming the garage

Hi John

>btw the windows aren't that big - maybe 600 x 600 each, >but
>branches waving outside them might be interesting...

Yes the microwave might see the moving branches.........

Can you not look for multiple hits on the pir/ dualtec via Comfort Scripts
before triggering the Alarm system to reduce false alarms?????

>p.p.s. should I be using stranded or solid cores, and >screened or
>unscreened ??

I use stranded unscreened ..havent seen the screened alarm cable here in
Melbourne....



HTH
Frank
----- Original Message -----
From: etj_webster
To: ukha_d@xxxxxxx
Sent: Tuesday, September 09, 2003 8:31 PM
Subject: [ukha_d] Re: Alarming the garage


--- In ukha_d@xxxxxxx, Frank Mc Alinden <fmcalind@b...> wrote:
> Hi John
>  Probably going against the grain here but just my opinion....
> Personally im not a great fan of Dualtec sensors...
> Two technologies..... two things to go wrong...
> You would also need to be careful with the Microwave sensor
> setup as it can penetrate through walls...
> The vibration sensors and glass break detectors and roller door
> contacts already suggested i would also recommend...
> I would personally use good quality pirs....
> although a little concerned with the amount of glass...

Frank,
points well noted.

I had heard of the dualtec sensors being a bit of a b_gger to
set up (probably due to the external sensing you talk about).
We have a lot of wildlife around our place (foxes, pheasants,
deer, etc) so this could be a problem. Mind you presumably
only if the pir detected them too...

btw the windows aren't that big - maybe 600 x 600 each, but
branches waving outside them might be interesting...

I think I'll get one dualtec and give it a try. If it goes off
while I wander around outside the garage then I'll probably send
it back...

Cheers,
John.
P.S. any recommendations on places to get alarm cable from at a
sensible price. I think I might needsome more...
p.p.s. should I be using stranded or solid cores, and screened or
unscreened ??