"Nightjar" wrote in message
...
On 17/02/2013 15:02, Peter Parry wrote:
On Sun, 17 Feb 2013 11:17:44 +0000, Nightjar
wrote:

A DIY alarm won't be remotely monitored by a professional company and
those are the only alarms that really act as a deterrent.

Class A alarms, usually found in commercial premises, are the only
ones properly monitored and which will produce a police response.

Most domestic "monitored" alarms are Class B Auto diallers such as
used by ADT on their cheaper offerings. Even assuming the incoming
scrote forgets to disable it on entry all it does is phone the
receiving centre who simply phone the contact they have. They don't
alert the police.

As most alarm companies (including even ADT) offer both class A and
Class B installations it isn't possible to tell if a house has a Class
A alarm with police response from the outside.

My point was that it is quite possible to tell if the alarm is NOT one
that could be monitored.

Like hell it is with a DIY alarm system.