[Laser] Slightly OT, may the qth.net Gods cause my underwear to itch...

[John McNulty]

>I have a PIR sensor monitoring an entry way.  It often falses due to
>bunnies, birds, lightning, dustclouds and tornados.
>
>How does the sensor in these work?  It is a sort of switch?  If I short the
>two pins together will it cause the sensor to trip?  Will it cause damage?
>I am thinking in this case I would be better with a magnetic loop
>underground to activate this sensor.  I am in the experimental stage, and
>want to use this unit for starters since the TX/RX codes match, keeping
>things simple for now.  Well, that and the fact that I already have a
>functioing pair...
>
>Any help or ideas would be greatly appreciated.
>
>Kurt
>
>---
>Ross Technologies Signals Intelligence Division
>Rosetta Proving Grounds
(775) 629-0831 ext. 406


Here's a URL http://www.glolab.com/pirparts/infrared.html that 
explains it fairly well.

Be a happy bunny!

J McN