Re: PIR Defeat, What To Use?

["Russell Brill" <russwbrill@xxxxxxxxxxxxx>]

When installing a system in a High-Risk building, Motion Detectors with
Anti-Mask is a must........ If the detector in the video had the anti-mask
feature, their little glass trick wouldn't have worked...

"Jen...tel" <poleclimber@xxxxxxxxx> wrote in message
news:1156536154.955176.310430@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Stanley Barthfarkle wrote:
>> BTW- if they "defeated" a PIR by moving through a room very quickly, the
>> PIR
>> wasn't set up properly to begin with.
>
> Naw, they mentioned reading that IRs can't see through glass.  They
> took a small piece of glass fashioned a wire frame and hung it a few
> inches from the IR lens so it didn't trip when someone walked through
> the room.  I'll tell you, it was cool on how they rigged the pole and
> wire hanger and didn't trip the motion when they dangled and placed the
> glass.
>
> Now that I think about it, didn't one of those military shows
> demonstrated how they use colored smoke to prevent battlefield infared
> detectors from seeing body heat,?
>
> So much so quick on defeating IR's........
>
> Hey, I got it! the producers of those shows own stock in a competing
> type of detector!
>