Probably not Mr Barsteward.
By the time you remove and replace an police response intruder alarm £99 will definetly be cheaper. They wont own the equipment (unlikly) so cant reprogram it.
Or is it not used and not paid for anymore?
Just popping my head up here lol
Earthing of a communicator is a good idea cos of the points alrready noted. Mainly this is to offer some protection to the device to be able to ground any spikes etc that do enter the communicator via the huge external aerial that is the BT network. If you...
nsi and ssaib are independant inspectorates like corgi, niceic etc that inspect security companies to ensure they are complaint and able to issue certificates etc.
The trade assoc for the security industry is the BSIA and they do not as with other trade associations inpsect.
the old ones are long gone and the new ones wont work.
The approved alarm companies that used id will have stock piles..... but that will be for their contracted systems. I doubt you will get any.
as breezer says you shouldnt put more than one unlatching device per zone. Not to say you cant but its not best practice. Id advise against it.
re pet sensors. Im not a huge fan either but they do exist and if fitted and setup correctly you will be ok.
Out of choice id go for perimeter...
GSM it is then lol
You can use a pay as you go sim to but keep an eye on it.
You can use wired/hybrids with full gsm modules too, or even use a standalone gsm communicator.
Either the scantronic homelink 75, risco wisdom or visonic powermax with appropriate gsm modules, but you can send sms via built in modems if you have a tel line.
You shouldnt put more than one sensor on zone as ity doenst comply. This usually isnt an issue but you wont be able to tell them apart in the event of a fault or a false alarm.
Also be careful with pet sensors, there are massive differences between their abilities. Personally i wouldnt use them...