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400-IO Control Board
400-IO Control Board
400-IO Control Board

400-IO Control Board

Regular price $291.90 $0.00
Part Number: ASY-400-X02
Vendor: Micro-Air, Inc. Shipping Weight: 15.0 oz
Shipping calculated at checkout.
Product Overview
400-IO - Drop in replacement control board for Dometic™ Marine Air™ Passport IO™
The SMXir display/keypad has an smart, condensed housing with easy surface-mount installation. A large, easy-to-read LED displays cabin temperature, set point, programming prompts, and fault code warnings, and small LEDs and backlit text indicate system status. Under a attractive hinged door is the familiar 10-button arrangement with clearly labeled keys for single-keystroke operation.

Optional infrared remote control is offered that permits system adjustments to be made remotely. Specifically designed for the marine environment, the SMXir display/keypad features a plastic housing, sealed membrane keypad, and electronics with anti-corrosion coating.

The A-288D replacement control board is also available for the legacy A-288C, A-288T, A-288D, and SMXII HV. The A-288D board replaces the A-288C with old mfg p/n 42404 and new mfg p/n 722300288.

Housings are available in black only with a 3/4 coverage door.
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
  • Newly Manufactured

Benefits of the 400-IO - Drop in replacement control board:
  • 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 #: 4220020 (Dometic) Comparable To Part #: ASY-400-X02 (Micro-Air)
Vendor Part #: 4220058 (Dometic) Comparable To Part #: ASY-400-P08 (Micro-Air) ** Obsolete Part #: ASY-372-P08 **

H-2: Works Only with these models:
  • VTD
  • VCD
  • CSD
  • SVCD
  • CMCD
  • SCMCD, and
  • AH Passport I/O

Can these boards be used for new installations?
No. These boards replace existing installations only.

Which boards do they replace?

  • The 400-IO replaces the Passport IO control board.


Is the board a direct replacement?
Yes. It looks slightly different from the original board but the connections and mountings are compatible.

Are these boards dual voltage?
Yes. They operate from 85 to 240 volts AC.

Marine Air Systems and Passport are registered trademarks of Dometic Corporation.

WARNING - California Proposition 65

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