New Comfort keypad install dilemma

["Paul Gordon" <paul@xxxxxxxxxxxxxxxxxxxxx>]

just received a new keypad that I plan to install this weekend.

I've fitted up the keypad end, set the ID jumpers to ID2 etc....

Next I need to connect it to the panel end. - never mind the fact that I
have no idea where the other end of the cable is at the mo (I'll find it!),
but I need to turn the panel power off to make the connection to the
Comfort
PCB... Now when I do this, the bell will immediately go off outside won't
it....

Is there an easy way to stop this?  -  could I use a wall-wart to send 12V
up to the bellbox? - If I do that, presumably I'd have to disconnect it
from
the Comfort PCB otherwise I'd be sending the 12V onto the PCB as well
wouldn't I? - so even if this would work, there would have to be a brief
period when there was no 12V going to the bellbox whilst I made the
switchover?....

Or is my only option to get up the ladder and disconnect the battery in the
bellbox?

Or could I connect the keypad to the PCB whilst it's is still on without
destroying my Comfort panel?

TIA

Paul G.