I've used Napion IR sensors with great success :-

http://www.naisweb.com/e/detecte/bltn_eng/bltn_eng_mp/bltn_eng_mp.html

There are analogue/digital versions. Dig is better imo 'coz you don't have to
fuss with compartors etc & they lend themselves better to pulse counting if
needed. 
Debbie :)

> On Tue, 12 Jul 2005, alan smith wrote:
> 
> > Looking thru all my archives....can't seem to find it....but some time ago
> (year maybe) someone had posted some info on inexpensive but good PIR
> sensors.  Anyone recall that reference?



		
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