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Door sensors


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Guest Guest_Bill_*
Posted

It's possible to arrange for a flush sensor to be invisible but the installer says that "it's against regulations guv", or words to that effect. I would like to solve the problem by engineering rather than referring to regulations. Particularly if, as I suspect, the regulations don't exist!

Posted

Well the regs DO exist, but if you say you can install a contact so that its invisible then tell your jobsworth to either fit a flush contact or risk not getting paid, im sure he'll buck up his ideas.

Mark Hawks

Ex BT Openreach Field Service

Now Self employed telecom and data engineer  www.mphtelecom.co.uk 

Also back doing sub contract work in the security industry.

Retained firefighter Devon and Somerset Fire and Rescue

Posted

I don't know for sure the regs on this matter, but I'd be extremely surprised if you can't fit flush contacts to outward opening doors.

Although, as Alarmgard said, it can be compromised. A surface contact would be the best bet.

Surface and flush can both have problems with moisture ingress, flush contacts more so.

If you don't know......ask.

Posted
Well a lot of doors i come across just have plates on the sides that the lock hook mechanism slides into thus allowing a flush contact to be installed in between.

As to the 10 year guarantee claim, fair enough but im sure upvc arent the only ones covered, how many metal/wood doors do you drill without giving a second thought to any guarantee

37684[/snapback]

Agree with Monteey, we try and always use flush a better job.

How many double glazing companies are still in buisness in ten years, around Manchester they dont seem to be trading that long, then suprise suprise let set up again in the same nuilding, same telephone number, same staff and same vans, i think this is the normal trick to get out of the 10year guarantee.

www.nova-security.co.uk

www.nsiapproved.co.uk

No PMs please unless i know you or you are using this board with your proper name.

Posted

If its an outward opening wooden door it should have a surface contact for 2 reasons.

1 it will be exposed to the elements and WILL corrode.

2 a bar magnet can be slid in the gap and the door opened without the contact activating.

However, we have installed flush contacts when the customer has insisted but have always made them sign a waiver relinquishing us of responsibility for faults or non activations.

The opinions I express are mine and are usually correct!

(Except when I'm wrong)(which I'm not)

Posted
1 it will be exposed to the elements and WILL corrode.

No it wont unless the door isnt sealed properly, what utter nonsense

Mark Hawks

Ex BT Openreach Field Service

Now Self employed telecom and data engineer  www.mphtelecom.co.uk 

Also back doing sub contract work in the security industry.

Retained firefighter Devon and Somerset Fire and Rescue

Posted
No it wont unless the door isnt sealed properly, what utter nonsense

37726[/snapback]

Outward opening remember, the seal is on the inside of the flush contact.

Posted

Why are we still slagging each other off?!

All contacts to all external doors are susceptible to the ingress of moisture. This will lead to corrosion.

Unless they are sealed contacts.

If you don't know......ask.

Posted
Why are we still slagging each other off?!

Noones slagging anyone off, we're just airing differing views

Mark Hawks

Ex BT Openreach Field Service

Now Self employed telecom and data engineer  www.mphtelecom.co.uk 

Also back doing sub contract work in the security industry.

Retained firefighter Devon and Somerset Fire and Rescue

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