Dometic Passport I/O Marine Climate Controller
Upgrade your marine air conditioning system with the Dometic Passport I/O Controller — a smart, digital climate control solution for Direct Expansion (DX), reverse-cycle, or chilled water (CW) A/C systems. Designed specifically for marine environments, the Passport I/O offers microprocessor-based control with advanced safety features, programmable settings, and a compact, easy-to-use interface.
Whether you're replacing a legacy controller or outfitting a new vessel, the Passport I/O delivers reliability, protection, and precise comfort at sea.
Key Features
- Universal Power Input – Supports 115V or 230V AC, 50/60 Hz
- Digital Display Panel – Four-button interface for easy temperature and fan control
- Built-in Air Temperature Sensor – Accurate onboard climate readings
- Programmable Fan Control – Auto or manual speeds, dehumidification modes
- Non-Volatile Memory – Saves all settings through power loss
- Smart Safety Features – Compressor delays, high/low pressure protection, water pump monitoring (with Pump Sentry)
- Filter Timer & Moisture Control – Includes air filter reminder and optional humidity-reduction mode (depending on firmware)
- Flexible Sensor Inputs – Supports external, return air, or outside air sensors
- Display Dimming + Diagnostic Feedback – Adjust brightness and view fault codes for troubleshooting
Technical Specs
|
Item |
Value |
|
Power Supply |
115/230 VAC, 50/60 Hz |
|
System Type Support |
DX, CW (chilled water), reverse cycle |
|
Display Panel |
Compact 4-button digital interface |
|
Temp Display |
°F or °C |
|
Memory |
Non-volatile (settings retained) |
|
Fan Modes |
Auto, manual, fan-only |
|
Sensor Support |
Internal + optional external (temp, air, water) |
|
Protection |
Compressor timing, freeze protection, water flow monitor |
|
Firmware |
Filter reminder & low voltage monitor in A15+ firmware versions |
What’s Included
- Dometic Passport I/O Control Display
- Compatible controller board (if bundled)
- User manual + wiring diagram PDF (digital download)
- Mounting hardware (optional per kit)
