Re: PIR recommendation.

[Robert L Bass <sales@xxxxxxxxxxxxxxxxxxxxx>]

On Mon, 20 Feb 2006 02:53:10 GMT, James Russo
<jr@xxxxxxxxxxxxxxxx> wrote:

>
> > Everything you've said up to this point is pretty much what I
> > would have done as well.  The detector covering hallway 126
> > (below) can work if it's a short enough range so as not to "see"
> > the windows and if there's no chance of reflected sunlight,
> > headlights, etc., hitting the detector face.
>
> According to the plans, it's ~40ft from that wall to the glass. Sunlight
> isn't a possibility, but outside those windows is a parking lot, so
> headlights are. Those windows will be tinted, so that could help. From
> the wall to the parking spot would be over 50 feet.
>
> > As an alternative to the detector near 107 which protects hallway
> > 126, have you considered installing a detector in the NE corner
> > of room 105.  That would cover room 105 and almost half of
> > corridor 126 (assuming that the back of the L-shaped counter in
> > room 105 isn't very high.  If the partition is too high, you
> > might consider placing a narrow angle detector on the wall above
> > the window near the SE corner of room 105.
>
> Good call about the NE corner. The L shaped wall is a half wall going
> about maybe 40 inches or so.
>
> Is the ademco 998 a good all-around PIR?

Some folks swear by it.  More folks might swear at it.  :^)

I've never been particularly fond of Ademco's motion detectors.
I tried a few 998's years ago with less than stellar results --
too many unexplained falses and quit using them.  I list them but
only because some people search for them.  When they ask I
usually recommend something else.

> Thanks,

You're most welcome.

--

Regards,
Robert L Bass

Bass Burglar Alarms
The Online DIY Store
http://www.BassBurglarAlarms.com

--

Never underestimate the power of very stupid people in large
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