This series board is no longer produced but were very rugged and trouble free.  If the board is bad in your Marine Air unit

the only choices are buying a good , tested second hand board or buy a new "U" series board.

  Save big by buying a used board.  

  Please, please know what you are buying!  Ask if you are not certain!   This board will run most every Marine Air/Dometic I/O series cabin control.   It uses an 8 pin interconnect cable.

  Keep in mind the Marine Air cables may look like just any cable but they are "X" cables, the ends are wired flipped over.