I picked up ~10 of these boxes from a local auction room.
The auction porter said they came from a lady who did horse physio.
I can’t think how or what they would be used for. there’s a pair of banana jacks on each end which I assume just daisy chanis each module with a DC supply and ground , or AC? … The a select switch and a bunch of pots per row. The metal pads are connected and are aluminum.
Obviously I am not going to use it for it’s intended purpuous, so not overly fussed. But my curiosity is peaked. I can only think that it provides high frequency AC and the user would rouch the pad whilst grounding to the horse to stimulate musscles ( no not the aquatic ones ).
@lookmumnocomputer , if you think you can adapt these into something , it’s minimal work on the construction side, I can box some up and fire them downto Kent.