Benefits of the 402-IO - Control Display: Backward-Compatible with Marine Air System Passport I/O Control Board Cutout-Compatible to Marine Air Systems Passport I/O Control Display Newly designed and manufactured control display. Replaces displays with serial numbers starting with 377. These are imprinted with a logo with a large penguin facing left. Cures annoying problems like sticking or non-operational buttons, bad LED segments or non-working displays. Note: This display is often confused for a passport II, ECU or Cabin Mate display. Please remove your original display and look on the back for a nine-digit bar coded serial number. Displays with serial numbers starting with 377 or 402 can be replaced by this 402-IO control display. If your current display lacks a serial number or has a number that does not match either 402, or 377, then this display will not simply plug in and work. If your display looks similar and has no serial number, you probably have an ECU, Cabin Mate, or Passport II display.
