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Old Dad Smith
Guest
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 Posted:
Thu Jun 23, 2005 3:07 pm Post subject:
A question concerning alarm sensors |
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I've posted a (suitably anonymous) plan of my ground floor showing my
uninformed choice of motion sensor locations 1-5 and a door contact at
6.
See http://tinyurl.com/bffpz
The blue dots are the sensors and the red lines are radiators.
Could any experts out there kindly tell me if I've made a good choice
of sensor location, please, or whether alternative positions would be
preferable. Have I got enough sensors?
Many thanks
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SantaUK
Guest
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Thu Jun 23, 2005 11:13 pm Post subject:
Re: A question concerning alarm sensors |
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Right above a radiator will cause false alarms when the heating comes on.
Also you haven't got anything on the Patio doors - this is a common area for
attempted access. Might want to fit shock sensors on these, stop them
before they get in.
--
Regards
SantaUK
"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119521256.676562.61040@g14g2000cwa.googlegroups.com...
| Quote: | I've posted a (suitably anonymous) plan of my ground floor showing my
uninformed choice of motion sensor locations 1-5 and a door contact at
6.
See http://tinyurl.com/bffpz
The blue dots are the sensors and the red lines are radiators.
Could any experts out there kindly tell me if I've made a good choice
of sensor location, please, or whether alternative positions would be
preferable. Have I got enough sensors?
Many thanks
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Old Dad Smith
Guest
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| Posted:
Fri Jun 24, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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SantaUK wrote:
| Quote: | Right above a radiator will cause false alarms when the heating comes on.
Also you haven't got anything on the Patio doors - this is a common area for
attempted access. Might want to fit shock sensors on these, stop them
before they get in.
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The Playroom and Lounge room have no dividing wall and are effectively
one room. 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 top avoid radiators
triggering the alarm. Any good brands out there?
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Old Dad Smith
Guest
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| Posted:
Fri Jun 24, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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The plan may be misleading - there is no partition between the Playroom
and Lounge room, only a couple of steps.
The motion sensors I had in mind were combined PIR/microwave sensors. |
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BIG NIGE
Guest
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| Posted:
Fri Jun 24, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119521256.676562.61040@g14g2000cwa.googlegroups.com...
| Quote: | I've posted a (suitably anonymous) plan of my ground floor showing my
uninformed choice of motion sensor locations 1-5 and a door contact at
6.
See http://tinyurl.com/bffpz
The blue dots are the sensors and the red lines are radiators.
Could any experts out there kindly tell me if I've made a good choice
of sensor location, please, or whether alternative positions would be
preferable. Have I got enough sensors?
Many thanks
Is there a reason you have chosen not to cover the front hall. |
There appears to be a partition between playroom & lounge room if this is
correct then there is no protection for the lounge,utility & shower rooms.
Because of the number of radiators in some rooms it is difficult to locate
sensors.
You use the word "sensors" (what "sensors" have you got in mind.) |
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Andrew Gabriel
Guest
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| Posted:
Fri Jun 24, 2005 4:36 pm Post subject:
Re: A question concerning alarm sensors |
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In article <1119563331.643814.113460@g44g2000cwa.googlegroups.com>,
"Old Dad Smith" <oldmistersmith@yahoo.ca> writes:
| Quote: | SantaUK wrote:
Right above a radiator will cause false alarms when the heating comes on.
Also you haven't got anything on the Patio doors - this is a common area for
attempted access. Might want to fit shock sensors on these, stop them
before they get in.
The Playroom and Lounge room have no dividing wall and are effectively
one room. 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 top avoid radiators
triggering the alarm. Any good brands out there?
|
You might want to look at some notes I put together a while back:
http://groups-beta.google.com/group/uk.tech.electronic-security/msg/ac5f61bd5da0c158?dmode=source&hl=en
It's likely the actual products mentioned have been superceded by
now, but this should still give you some things to think about,
and which features you want and which you don't want.
--
Andrew Gabriel |
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BIG NIGE
Guest
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| Posted:
Fri Jun 24, 2005 11:46 pm Post subject:
Re: A question concerning alarm sensors |
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"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119563475.681255.309170@g43g2000cwa.googlegroups.com...
| Quote: | The plan may be misleading - there is no partition between the Playroom
and Lounge room, only a couple of steps.
The motion sensors I had in mind were combined PIR/microwave sensors.
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That is what I was going to recommend.
We mainly use the Equinox PI from Pyronix (This is a Pet friendly version of
the Equinox 10)
Others in the range are
Equinox 10 (10 Metre Range)
Equinox 15 (15 Metre Range)
Equinox E (15 Metre Range with look down zone) (not recommended near your
radiators) |
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Old Dad Smith
Guest
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| Posted:
Sun Jun 26, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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BIG NIGE wrote:
| Quote: | The Main problem with perimeter ONLY security,
If ONE sensor fails then there is total access to the property.
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Good point
| Quote: | You should be OK with dual-tec sensors, just make sure that the Microwave is
not turned up so high that it looks THROUGH glass.
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How far away from radiators should dual-tech sensors be located? |
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BIG NIGE
Guest
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| Posted:
Sun Jun 26, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119732142.996932.221390@g47g2000cwa.googlegroups.com...
| Quote: | 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?
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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 |
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BIG NIGE
Guest
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| Posted:
Sun Jun 26, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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The Main problem with perimeter ONLY security,
If ONE sensor fails then there is total access to the property.
You should be OK with dual-tec sensors, just make sure that the Microwave is
not turned up so high that it looks THROUGH glass.
Also if you are installing microwave sensors close to one another make sure
that they are operating on different microwave frequencies (Pyronix supply
3 different frequencies) Easily distinguishable by different colout
frequency stickers on the boxes - RED, PINK & GREEN.
"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119732142.996932.221390@g47g2000cwa.googlegroups.com...
| Quote: | 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.
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SantaUK
Guest
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| Posted:
Sun Jun 26, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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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
"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119732142.996932.221390@g47g2000cwa.googlegroups.com...
| Quote: | 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.
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Old Dad Smith
Guest
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| Posted:
Sun Jun 26, 2005 12:36 am Post subject:
Re: A question concerning alarm sensors |
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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?
I have lots of radiators AND some underfloor heating so PIRs could be
more trouble than their worth. |
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PeterCB
Guest
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| Posted:
Sun Jun 26, 2005 8:36 am Post subject:
Re: A question concerning alarm sensors |
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"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119521256.676562.61040@g14g2000cwa.googlegroups.com...
| Quote: | Have I got enough sensors?
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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? |
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PeterCB
Guest
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| Posted:
Sun Jun 26, 2005 8:36 am Post subject:
Re: A question concerning alarm sensors |
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"Old Dad Smith" <oldmistersmith@yahoo.ca> wrote in message
news:1119738815.215422.164830@f14g2000cwb.googlegroups.com...
| Quote: | How far away from radiators should dual-tech sensors be located?
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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. |
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Old Dad Smith
Guest
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| Posted:
Sun Jun 26, 2005 3:18 pm Post subject:
Re: A question concerning alarm sensors |
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PeterCB wrote:
| Quote: |
What are your intentions for response?
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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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