400-IO Control Board

/* container */ .responsive-two-column-grid { display:block; } /* columns */ .responsive-two-column-grid > * { padding:1rem; } /* tablet breakpoint */ @media (min-width:768px) { .responsive-two-column-grid { display: grid; grid-template-columns: 1fr 1fr; } } 400-IO - Drop in replacement control board for Dometic™ Marine Air™ Passport IO™ A redesigned, newly manufactured, replacement control board. Drop-in compatible with existing electrical boxes. Guides & InformationEasyStart Wiring Diagram Before You Buy This board replaces Marine Air and Dometic Passport IO series power supplies. Board mounted parts and layout changed over the many years since the first version of this board was manufactured however, several features of this Board can be used to insure this is the correct board for your application. All models of these boards to be replaced by the 400 I-O have a nine-digit bar coded serial number starting with either 372 or 400. There a