Re: Re: Occupancy detection

["Stuart Meier" <stuartmeier@xxxxxxx>]

> What is the url of rapid? It is such a common word, that google has
> given me many false positives.

www.rapidelectronics.co.uk

StUart
----- Original Message -----
From: "Stephen" <yahoo@stephenorme.freeserve.co.uk>
To: <ukha_d@yahoogroups.com>
Sent: 25 January 2004 17:55
Subject: Re: [ukha_d] Re: Occupancy detection


> On Fri, 16 Jan 2004 22:43:45 -0000, you wrote:
>
> >Go here http://www.ukha-archive.com/cgi-bin/namazu.cgi?
> >query=ecolume+pir+occupancy
> >
> >The "ecolume" occupancy PIRs do work a treat, a few of
us have
> >them.  Well, I had them in my last place, and will have them
again.
>
>
> Hello,
>
> Please can I ask what is the difference between a
"traditional" pir
> and an ocupancy detector? From what I have "overheard" here,
a
> standard pir will trigger when it detects movement, but it seems that
> an occupancy detector is much more sensitive, and will trigger on much
> smaller movements. Thjis would be great to automate lights, because
> with a normal pir, if you stop walking the lights would go off, but it
> sounds as if an occupancy detector would keep the lights on.
>
> How do you connect an occupancy detector? Do they switch 240v ac or
> 12v dc? Does their output remain high as long as movement is detected?
>
> The only one I have found is in screwfix but it only has a 90 degree
> range. Are there any with better ranges; for automating room  lights
> really 360 degrees would be best.
>

>
> Thanks,
> Stephen.
>
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