Re: Help with 7 Circuit Project?

["Frank Olson" <feolson@xxxxxxxxxx>]

"Robert L Bass" <robertlbass@xxxxxxxxxxx> wrote in message
news:wKCdnSd3EsnGCkbfRVn-vQ@xxxxxxxxxxxxxx

> ...When thunder triggers glass breaks it usually trips several of them.

Don't know about you, but the glass breaks I use don't get tripped from
thunder.  Edmonton (Alberta) is also the "thunder & lightning" capital of
the Prairies.

> Have the glass break zones start a timer.

Zone "anding", timers...  Tsk!  This is a "poor tech's" method of covering
up mistakes in placement, or the use of inferior equipment...  It also very
much enhances the perp's ability to defeat your system (accidentally or on
purpose)...


> If any glass break zone is tripped wait 10 seconds before triggering an
> alarm.  If a second glass break activates within that time frame, take no
> action.

And I suppose these glass breaks are in different rooms with windows facing
in different directions...  Good plan...  But what if they're not??  What if
the room is large enough to require two glass breaks??  What if the perp
smashes a window that's close to or actually in an area where the coverage
patterns happen to overlap??  So he smashes the glass and continues to break
the broken bits out of the frame.  There's your "first" trip, followed by a
"second"...  All within ten seconds...  No problem...  let's "ignore"
whatever happens...  Robert, your "experience" may be such that you would
recognise when *not* to utilize this scheme.  I think it's a huge disservice
to even mention it though when most DIY's don't have the benefit of that
"experience" and can't obtain it in the "two hours it takes you to teach
someone how to professionally install on the phone"...  Stick to providing a
quality product, recommend they read the manufacturer's instructions and
suggested installation tips, ensure they obtain the proper tester so that
the unit can be set up correctly (in accordance with the manufacturer's
instructions).  Thieves will break in during lightning storms too, you
know...  ;-))