Garmin GMI 20 Marine Instrument Display 4-inch QVGA Color LCD NMEA 2000

Juggling multiple gauges and squinting at tiny readouts makes navigating your vessel harder than it needs to be. The Garmin GMI 20 Marine Instrument Display consolidates critical data into one crisp, 4-inch color screen, so you can keep your eyes on the water and your finger on the pulse of your boat's performance.

Who is it for

Ideal for sailors and powerboaters who want a clear, customizable dashboard for engine data, wind speed, depth, and more. Whether you're upgrading an older system or adding a dedicated display to a new build, the GMI 20 fits seamlessly into your NMEA 2000 network.

Main features

• 4-inch QVGA color LCD with dimmable LED backlight for excellent readability in all lighting conditions
• Displays over 50 marine parameters including depth, speed, wind, engine, fuel, and temperature
• IPX7 water rating – protected against immersion up to 1 meter for 30 minutes
• Audible and visual alarms for critical conditions
• Flush or flat mount options for flexible installation
• Powered directly from the NMEA 2000 network (10-32 Vdc)

Specifications

• Display Type: Color LCD
• Display Size: 4 inches (diagonal)
• Display Resolution: 320 x 240 pixels (QVGA)
• Backlight: LED, Dimmable
• Water Rating: IPX7
• Operating Temperature: -15°C to 70°C (5°F to 158°F)
• Power Input: 10-32 Vdc (NMEA 2000 powered)
• Power Consumption: 6.5 W max
• NMEA 2000 Connectivity: Yes
• Mounting Options: Flush or Flat Mount
• Compass Safe Distance: 200 mm (7.9 in)
• Housing Material: High-impact plastic

Tips

Ensure your NMEA 2000 backbone is properly terminated and powered to guarantee reliable communication with the GMI 20. For best visibility, adjust the backlight dimming to match ambient light conditions. When flush mounting, use the included gasket to maintain the IPX7 water rating.