Is product available that is graded?
If yes then you cant use, if no then it would yes
Also there may not be a EN for that detector (id of thought it would fall under shock though)
You can 2 stage arm etc but you can also disarm with the shunt lock.
I'd want a local sounder but notification wise depends on signalling and total sounders
so even if you only have 1 keypad connected on line 1 addressed as 1 it still doesnt work. Have you also tried a temp small cable just out of the panel to prove the wiring?