The electronics are most likely on a single layer board comprised of simple easily obtainable common electronics.
Pressure gauge & power components are surly proprietary but that should be easily overridden with mechanical replacements if ever needed.
As long as its a single layer board repairs should be a simple task, but then while the parts are available the best thing would be to grab extra parts just in case..
I guess its time for custom builders to go to the next level,
Its a good thing I like electronics.