You don't have any they are same as before
Either you find parts
Or you get installer to put in a bus system like hkc
Or you go wireless and try and keep some wired bits so hybrid panel
Most of this will end up being repetitive , although good to see pictures , conclusion is same scrap it because no one will want to maintain it and you will find your situation harder as time goes
Scrap scrap scrap
Perimeter protection where needed depending on whether dog headbutts everything