I'm thinking of installing a chain free alarm system,are they any obedient and which are the best to buy?
I installed one about four years ago and am really pleased near it. The only article you have to keep watch on is that the batteries within the sensors have to be changed every immediately and then. Mine last for more than three years and changing them isn't difficult or expensive. I don't know which brand is best but mine is a "Rhino".
None of which comply to EN 50131-1, the most up-to-date european regulation to which installers have to abide by.
And and so wouldn't fit the bill as far as your insurance company goes if you enjoy told them you have an alarm fitted.
Go to a clad intruder specialist and get part equipment installed.
You may pay more-but at tiniest you know the insurance will pay out contained by the event of a claim.
Answers: I know a couple that have installed an X10 system. Look at www.x10.com or
http://www.x10.com/security/index.html