Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
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.
I was assuming it was a fancy cold plunge pool since there are 2 massive water chillers hooked up to it. But the 2nd photo makes it clear it's hyperbaric O2. The water chillers must be for climate control since you don't want any fans or anything else that may cause a spark in a high oxygen environment