Hello
thanks all the advice observations and comments.....
Based on what’s been said.....i have decided to abandon the present alarm system altogether and go for a wireless one.....easier to install also..
Some of the alarm wiring was installed in 1987 so not sure how long it will be before any of that fails, buried between floorboards, in walls etc etc.......
so just need a good wireless alarm system, with approx 11 PIR’s 5 door sensors 3-4 smoke alarms 1-2 KP’s ( need partset overnight so may need 2 KP,s)
thanks again