Re: Positioning of PIRs etc

["Alancc" <alan.cc@xxxxxxx>]

No, the best place is in the corner looking into the room, not out of a
window, and not above a radiator. When you walk into the room or come
through the window the detector will be most sensitive when you cross it at
90 deg not when walking towards it. If you put it above the window you will
have air currents moving in front of it so making it unstable. The 360 deg
ones would normally go in the middle, you can put them towards a corner but
if so mask off the lens near the wall.

Alancc
----- Original Message -----
From: Mick Furlong <dorsai@xxxxxxx>
To: UKHA Group <ukha_d@xxxxxxx>
Sent: Friday, December 21, 2001 12:04 PM
Subject: [ukha_d] Positioning of PIRs etc


> Most of my rooms are laid out with the window at one end with the
entrance
> into the room being at the opposite end. Am I right in thinking that
PIRs
> should be located above the window facing into the room for best
operation,
> ie fewer false alarms due to curtains etc.
>
> I also have a couple of ceiling mount 360 degree PIRs any advice on
the
best
> place to use these?
>
> Thanks
> Mick
>
>
>
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