The question would be difficult to answer because the wall dock is a major part of the equation. So… What kind of “wall dock” do you have in mind? What constitute a “wall dock”, or what do you want this “wall dock” for?
Maybe you could share a couple of makes/models/links?
The wall alarm panel has 4 wires coming in, it seems. You said 12V batteries - is that 12V going all the way to the wall panel also? DC or AC at the wall panel location? Is it stable? On which and which wire? What are the other wires do? Do you plan to use the other 2 wires at all?
Honestly I don’t know what any of those wires do, nor do I know what wall panels will work. I’d like a nice one and works well. Goes completely dark when not in use
I know the touch panel current seen in the image is 12v