Obsolete. As of 12/2020, these are no longer manufactured or available. You may be able to upgrade to a SpaNet Mini control system with no Plumbing or Electrical changes.
SpaNET XS 3000 brain circuit board. Commonly fails after power surges & sustained low-voltage events.
12v ‘Brain’ printed circuit board (Mini-din side) to suit XS3000 controller only (gold control box)