I regret not getting clearer pictures to zoom in and see the words on the instruments but I felt the need to be discreet as I was just walking by, these ocean-front home garages are rarely/NEVER left open unattended. What is this mystery chamber?
One more different angle picture in the comments, you can see the seating bench in the chamber.
Yeap, my dad used to run hypobaric chambers for the air force and then for the FAA. Just maintaining that kind of equipment is basically a full time job, let alone actually monitoring their uses.