Dometic NOS Passport I/O Circuit Board for Self-Contained Marine Air Conditioners

New old stock Passport I/O board will replace your circuit board IF your board does not have a big transformer mounted to it.  Another way to confirm if this board will replace your board is to go into the programming function on your display.  If your programming menu starts with a U (U1, U2 etc), this board is not a replacement without replacing your display.  If your programming starts with a P (P0, P1 etc), this board will work for you.  This board is NOS and is obsolete.PCB-372.   Look for the label   This board with 4 telephone jacks has been replaced with a U-Board which has 3 telephone jacks.  Only 1 available.  30 day warranty.