A question concerning alarm sensors

A question concerning alarm sensors
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A question concerning alarm sensors Old Dad Smith 06-23-2005
Posted by PeterCB on June 26, 2005, 6:48 am
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> How far away from radiators should dual-tech sensors be located?

There is no set distance.
Where installers have to fit detectors in a room
with a radiator, 99% will avoid fitting them
directly above and most will site them the opposite
side of the room if possible.
(dual techs or otherwise)

There are good reasons for doing this and it
gets a little technical to explain why.




Posted by BIG NIGE on June 25, 2005, 9:46 pm
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> If I put magnetic contacts on each door and vibration sensors on each
> window, could I do away with PIR motion sensors all together? What
> would be the disadvantages of this?

Also as you have not mentioned control panel yet, make sure that you only
fit ONE sensor per zone, so if lots of sensors use a panel with more zones
than you have sensors (for later expansion.)

And make sure that you have plenty of battery back-up




Posted by SantaUK on June 25, 2005, 10:03 pm
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As long as you put vipers on the external doors along with the contacts.
Just bear in mind the postman knocking on your front door - they can be
quite heavy handed at 7am when they think your in!!!

Also think carefuly about access from the loft / roof. If no space
protection then you need to think about more "uncommon" access methods - do
you have a cellar? Theres another to check!

--
Regards

SantaUK
> If I put magnetic contacts on each door and vibration sensors on each
> window, could I do away with PIR motion sensors all together? What
> would be the disadvantages of this?
>
> I have lots of radiators AND some underfloor heating so PIRs could be
> more trouble than their worth.
>




Posted by PeterCB on June 26, 2005, 6:56 am
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>Have I got enough sensors?


Good question.

That depends on whether or not you want police
response in the event the system is activated.

Police will respond to systems that adhere to a
strict set of policies.

They might respond to the ones that don't if they're
bored and nothing better to do.

What are your intentions for response?




Posted by Old Dad Smith on June 26, 2005, 3:18 am
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PeterCB wrote:
>
> What are your intentions for response?

To alert the neighbours. On balance, I think that I've got more chance
of a faster response than signalling the police.

Not a criticism - just my personal experience, that's all.



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