Re: Advice on sensors, please

["Bob Worthy" <securinc@xxxxxxxxxxxxx>]

And along with all that Frank has pointed out, are you familiar with the
powers of Microwave and how to adjust and test this feature? Using dual
technology is the proper thing to do, but don't think that you can just lick
it and stick it. They can be just as prone to false alarms, as other
sensors, if not properly set up.

"Frank Olson" <feolson@xxxxxxxxxx> wrote in message
news:RMMue.1785187$Xk.1756607@xxxxxxxxxxx
>
> "Old Dad Smith" <oldmistersmith@xxxxxxxx> wrote in message
> news:1119563551.566133.141340@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > The plan may be misleading - there is no partition between the Playroom
> > and Lounge room, only a couple of steps. Therefore, I am hoping that
> > sensor 5 will cover the 30 ft. distance to the patio doors and detect
> > someone breaking the glass.
> >
> > I intend to use combined PIR/microwave sensors to avoid radiators
> > triggering the alarm.
>
>
> Poor layout.  You've got motion sensors looking at south facing windows.
> You've got no contacts on other entry doors which will restrict your use
of
> the system while you (or your family) are at home.  A PIR of any sort in
the
> kitchen isn't required unless you're using gold faucets.  Taking out #3,
and
> moving #1 to the South east corner of the dining room would be better.
> You'd cover a good portion of the kitchen there as well.  A sensor in the
> living room would be best in the South West corner.  Glass breaks and
> contacts for the patio doors in the "lounge room".  PIR in the north east
> corner of the utility room (where you indicate #6).  If you have pets, the
> motion looking up the stairs isn't a good idea (even if you're planning on
> using "combination units") and you may have to mask the lens.  If the
walls
> aren't up yet (drywalled), I'd rethink your system to incorporate more
> perimeter type sensors (even if you just pre-wire for them at this stage,
> you can expand on the system as your budget allows.  Contacts on the
windows
> that open, glass break detectors, security screens, etc.  What about
> pre-wiring for system smoke detectors, CO, and heat??  You don't need more
> than two PIR's for the main floor if you're going with a perimeter system,
> and those should cover the areas/rooms with stairs to the second or
basement
> levels.  For instance, your PIR #4 won't see the stairs going down to the
> basement (I'm assuming the door adjacent to the back door is the door to
the
> basement).  Moving it to the corner adjacent to the kitchen door would
> probably be better, but you're going to have to be careful with the
> radiators in this area as well.  It's a nice house-plan though...
>
>