Thanks very much for the reply. I am just on my way out and I have 7 zones and am not sure which one the extension works from. I will give it a go later, and let you know if it works.
Cheers 8)
I have inherited the above alarm system. Unfortunately I do not know the model and the previous owner has left no manual,deep joy. However the alarm works. When I first moved in it had a facility whereby when the front door was opened the alarm would emit a beeping noise so if I was in a...