Conservantry alarm sensor

G

Gaz the Sparky

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Hi

Just looking for opinions and advice. I have a customer who is having a new conservatory built and wants the house alarm to cover the conservatory too.

I suggested we install a door magnet sensor on the door. But the customer does not want the sensor screwing to the door.

The customer wants a PIR installed but i am dubious to this because of the fluctuating temperature of a conservatory and also the PIR picking up through the glass.

Has anyone installed one of those purpose made Conservatory PIRs before or has anyone got any other suggestions ??

I just don't want to be going back and forth with the customer having problems with the sensor

Cheers
G.T.S :cool:
 
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First of all a PIR will not "look through Glass".
A good "quad" would get away with it - just, a DT (PIR and Microwave) would be the better, looking away from the sun too if possible ( just a precaution). Or have a detector looking into the nice greehouse from the adjoining room.

The DT microwave element will look through glass, so needs setting up as per manufacturers instructions. Some differ, but generally the same.

Any pets? Cats will just make the effort pointless (Almost) dogs not so much.
 
Alarm said:
First of all a PIR will not "look through Glass".
Click to expand...
While they will be un-likely to see a person through glass they can see the IR effect of large objects. Cars passing a window can trigger IR sensor and the thermal image of the hot flue gases from the next door's boiler can trigger a PIR through glass.

For a conservatory I would consider using a discrete beam system, maybe using mirrors to reflect the beam at corners thus covering more than one wall with the beam.
 
Whilst your correct Bernard. You will note it was suggested the detector is facing into the room area. Easilly done with good forethought or design, even wireless.
Also with DG windows the effect is greatly reduced again. I would worry more about low sun in clear skies (Winter conditions).
A beam arrangement is all well and good, but I did mention pets (Cats) specifically.
Also fittings could interfeer. Small reflectors could mist up in certain weather conditiions.
Also I doubt there are cars in the back garden or visable (An assumption I know).
I have not seen a PIR affected by "flooded IR" from an external source for many years now, so there is little to worry about especially in a domestic enviroment.
 
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Simples give some security advice.
A conservatory is for sitting in and boiling in warm weather or freezing your tits off in the winter.
I have no idea who thought they were a good idea in this country . add in the mould and moss etc and they look only attractive in one respect - less onerous on planning than an extension.

Anyway. Protect the doors with contacts and ignore your silly client. You can't protect all openings in a conservatory as they have too many opening windows usually (To let out the heat and the flies and moths in).

But basicall protect the room the conservatory leads into and DON'T PUT VALUABLES IN A CONSERVATORY.. crappy whicker settee if you must but I have seen people with Huge TVs and all their computers or laptops scattered around - Madness.
 
yaleguy3 said:
Simples give some security advice.
A conservatory is for sitting in and boiling in warm weather or freezing your **** off in the winter.
I have no idea who thought they were a good idea in this country . add in the mould and moss etc and they look only attractive in one respect - less onerous on planning than an extension.

Anyway. Protect the doors with contacts and ignore your silly client. You can't protect all openings in a conservatory as they have too many opening windows usually (To let out the heat and the flies and moths in).

But basicall protect the room the conservatory leads into and DON'T PUT VALUABLES IN A CONSERVATORY.. crappy whicker settee if you must but I have seen people with Huge TVs and all their computers or laptops scattered around - Madness.
Click to expand...


Because ignoring the customer is good practice..... As said a good quality dual tec will suffice and cover the whole area.

 
And most of all, if the customer really wants it, do it.
The technology is there.
Dictating how the end user should live is going to get you off the job. Give sound physical security advice by all means.
 
Hi guys

Thanks for the advice i went for a Dual tec sensor in the end and set it up as per the instructions

all is good

Cheers

G.T.S :cool:
 
i managed to get the magnet and sensor inside my upvc door and the frame ;)

this would have been your best bet while the conservatory was being constructed
 
Which was not clear ;)

Did that invalidate the door warranty, cutting into it?
 
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