"Tim Jenkins" wrote in message
...
Hello,

Just had wooden window frames replaced with uPVC. The old frames had those
magnetic sensors screwed into the Window/Frame. Whats the best way of
fitting these on the new uPVC frames ? I was told it invalidates the
guarantee if you screw things into them ?

Any thoughts?

Cheers,
Tim.



Can I ask, why do you need contacts on the windows ? Aren't the rooms
covered by PIR's ? Are you hoping someone will try to open the window
rather than cut out the glass double glazing unit, which is the most likely
to happen ?

I just can't get my head around having reed switches on windows. Shock
inertia sensors yes, or even glass break detectors in the room, but magnetic
contacts ? No, don't get that one at all.


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