400-IO Control Board
400-IO - Drop in replacement control board for Dometic™ Marine Air™ Passport IO™ The 400-IO Control Board is Micro-Air's long-standing cabin control standard for both self-contained & split DX systems and for CW air handlers. It supports the 402-IO Control Display and the EasyTouch OEM Control Display.
Guides & Information
The 400-IO Control Board is a fully-compatible replacement for the Passport® I/O Control Board from Marine Air Systems®. - Display and other Jacks are all on the top.
Replacement Marine Air Systems® Passport® I/O Control Board
New Control Board Redesign
Backward-Compatible to Legacy Marine Air Systems Passport I/O Control Board
Footprint-Compatible to Legacy Marine Air Systems Passport I/O Control Board
Benefits of the 400-IO - Drop in replacement control board:
Vendor Part #: 4220020 (Dometic) Comparable To Part #: ASY-400-X02 (Micro-Air) Marine Air Systems® Passport® I/O Control Display
Completely new designed and manufactured board.
Replaces boards with original serial numbers starting with 372.
Fully function and footprint compatible with original design
Can also be used with our ASY-402 display to completely replace an older Passport II™ control board (Display keypad must be replaced when replacing the control board.)
Vendor Part #: 4220058 (Dometic) Comparable To Part #: ASY-400-P08 (Micro-Air) ** Obsolete Part #: ASY-372-P08 ** H-2: Works Only with these models:
AH Passport I/O