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occupancy detectors

To: ukha_d@xxxxxxx
Subject: occupancy detectors
From: Stephen <yahoo@xxxxxxx>
Date: Thu, 04 Dec 2003 16:16:43 +0000
Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
References: <36E92344-2395-11D8-95C2-000A9585569C@xxxxxxx>
Reply-to: ukha_d@xxxxxxx

Hello,

I know the detector at Screwfix has been mentioned here before. How is
it different from a PIR? Is it that a PIR detects movement but this
detects a presence, even stationary? Why aren't they more common? Does
it output 240v or a lower voltage when someone is detected? IS the
output momentary or as long as the person is there? What is the range
like?

Sorry there are so many questions!

Thanks,
Stephen.

References:
- IR Distribution {Scanned for Viruses}
  - From: Ross McKillop <home@xxxxxxx>

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