David Hansen wrote:
On Mon, 07 Aug 2006 12:25:36 +0100 someone who may be Timothy Murphy
wrote this:-

Are alarm systems akin to brain-surgery,
or are they in the bicycle-puncture bracket?

They are very simple, or rather the sort of alarm systems one buys
commercially are very simple.

However, "insurance" companies generally specify that such things
can only be done by "professionals" if the "insurance" "policy" is
to be valid.

Therefore you need to be sure why you would want to do this yourself
and what the implications are.

Depends if the OP has his policy tied to a professionally installed
alarm, of course.
And even if he does, it's normally not valid without an annual service
anyhow.

You could install them and then have them checked over by a NACOSS
installer if your policy counts on it, otherwise just do it yourself
and leave it at that.