Re: Unguarded conduits--The unheralded hero of scifi adventure!

In article <479a2f8f$0$36322$742ec2ed@[EMAIL PROTECTED]
>,
 "James Gassaway" <dtravel@[EMAIL PROTECTED]
> wrote:

> Anim8rFSK wrote:
> > In article <4798ed22$0$36374$742ec2ed@[EMAIL PROTECTED]
>,
> > "James Gassaway" <dtravel@[EMAIL PROTECTED]
> wrote:
> >
> >> PV wrote:
> >>> Anim8rFSK <ANIM8Rfsk@[EMAIL PROTECTED]
> writes:
> >>>> Probably heat detectors.  Take a piece of tape, and see if you can
> >>>> walk right up to it and tape it over.
> >>>
> >>> Nope, not a heat detector. You can push open the door with a broom
> >>> and the lights will go on.
> >>
> >> As I recall, motion detectors work by detecting air movement.  So if
> >> you move slowly enough to not generate significant air displacement,
> >> you're fine.  But that was some years ago and tech changes fast
> >> these days.
> >
> > My motion detectors are looking for heat.  We also have glass break
> > (noise) detectors.  I'm not sure how a motion detector would look for
> > air displacement unless it was looking at heat?
> 
> A really sensitive pressure sensor?  Moving air exerts pressure on the 
> sensor, triggering it.  I don't think I ever was told the details and it
was 
> some time ago.  *shrug*  (And, no, they couldn't be used outdoors
because 
> the wind would trigger them.)

You'd think that would be triggered by the A/C cycling.

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