OK, I'll try and make this easy/interesting...

Essentially I've got a duff house alarm that was professionally installed, the only thing that's wrong is the CPU (and the 200 quid a year maintenance contract for Sweet FA).

So I thought I could replace the CPU with something like the Comfort CPU which gives me control of my own destiny and then for a wheeze get into HA for kicks.

I guess what I'm interested to know is:

1) Would it be difficult to swap over the CPU's? (I'm technical but not a sparky or an alarm engineer) Is it just a case of swapping the units and plugging the PIR wires in the right place?
2) Is Comfort the right way to go?

That's probably enough for now, but be warned, I'll be back for more if anyone answers!!!!

Thanks for playing

Dave