Ah quick read thought You said cr123 pretty standard which reality is , it isn't
But yes no one said it's a door contact , and yes stupid array of batteries
Customers buy those dial batteries or whatever they are called and expect them to last lol
No I think the enforcer old contacts are stupid like the visonic ,
Most take cr123 but some contacts take the smaller cr2 or something like that on visonic shock ,
I think one type of contact is different on these aswell
But open the thing man and look wasting time typing here lol
Just wondering how you update it , your in Ireland yes?
Updates allow you to use some new devices that come out and fix any issues , although mostly I only needed to update for devices , firmware seems stable otherwise
Basically you need to ask on an electricians forum because most on here don't install this panel the electrician will also probably be cheaper but you might not get much aftercare if that's the right word still maybe someone will charge you 400 quid if the cables are already installed
What area of the country are you?