Meet the Garmin GNX21 Instrument Display—the glass-bonded cockpit powerhouse built for serious sailors and anglers who demand clarity, versatility, and hands-free data on deck. Its inverted display delivers large, high-contrast digits for easy reading day or night.
-
Display and readability: 4.0" diagonal display with digits up to 36 mm on a high-contrast, inverted layout for quick reference in all lighting conditions.
-
Glass-bonded anti-glare surface: Prevents fogging and reduces glare, ensuring visibility in bright sun, dusk, or darkness.
-
Directly driven LCD with dot-matrix field: Combines clear numerical data with graphical information for at-a-glance insights.
-
Low power consumption: Optimized for off-grid sailing—about 25 mA (350 mW) without backlight and 400 mW with mid-level backlight at night.
-
Auto-scroll: Hands-free operation that automatically cycles through data screens at your chosen pace.
-
Customizable user profiles: Five display configurations for sailboats or powerboats, including single, dual, triple function, gauge, and graph modes to show wind, depth, speed, and more.
-
Custom color backlighting: Choose from seven backlight colors or create a personalized color for optimal readability in your cockpit.
-
NMEA 2000 compatibility: Monitor 50+ marine and boat parameters—GPS speed, depth, temperature, wind direction and speed—directly from the NMEA 2000 bus.
-
NMEA 0183 compatibility (optional): Optional 7-pin cable supports NMEA 0183 devices.
-
Flexible mounting options: Includes a low-profile flush mount and an optional flat mount for a sleek glass-helm look.
-
Compact, capable hardware: 4.0" diagonal display (11 cm), 11 cm × 11.5 cm × 3 cm, weighs 230 g, operating from −15°C to 70°C (5°F to 158°F).
-
Energy-efficient off-grid performance: Designed to deliver reliable data while minimizing power usage, ideal for sailboats relying on battery power.
With the GNX21, you gain a reliable, easy-to-read cockpit data hub that consolidates sensor readings from GPS speed, depth, temperature, wind, and more directly from the NMEA 2000 bus. Five configurable profiles tailor the display for sailboats or powerboats, while adjustable backlighting and flexible mounting ensure legibility and seamless integration with your boat’s layout. The auto-scroll feature provides hands-free data rotation, letting you monitor critical readings while you focus on maneuvering, navigating, or fishing—whether you’re cruising, racing, or fishing.
