Garmin GNX 21 Marine Instrument, 4" LCD inverted, NMEA2000®/NMEA0183

Garmin GNX 21 Marine Instrument

The Garmin GNX 21 Marine Instrument is a high-performance marine instrument designed for boating enthusiasts. With its 4" LCD inverted monochrome display, it provides clear and easy-to-read information even in bright sunlight.

Featuring NMEA2000®/NMEA0183 compatibility, this marine instrument seamlessly integrates with other devices on your boat, allowing you to access various data such as water temperature, depth, speed, and more.

The compact dimensions of 110 x 115 x 30 mm (4.33" x 4.53" x 1.18") make it suitable for installations with limited space. Weighing only 230 g (8 oz), it is lightweight yet sturdy, ensuring durability even in rough marine conditions.

The Garmin GNX 21 Marine Instrument has a water rating of IPX7, providing excellent waterproof performance. You can trust it to withstand splashes, rain, and even immersion in water for a short period of time.

Equipped with an inverted LCD display, the GNX 21 offers superior visibility and readability. The display size of 83 x 60 mm (3.3" x 2.4") provides ample space to view crucial information, and the 101.6 mm (4.0") diagonal size ensures a comfortable viewing experience.

It offers flexible mounting options, allowing you to choose between a flat or flush installation depending on your preferences and the layout of your boat.

The display is glass bonded, which enhances the clarity and reduces glare, ensuring optimal visibility in all lighting conditions.

The temperature range of the GNX 21 Marine Instrument is from 5° to 158°F (from -15° to 70°C), enabling reliable performance in various environmental conditions.

With NMEA 0183 compatibility, this marine instrument can seamlessly communicate with other NMEA 0183-compatible devices, expanding its functionality and providing comprehensive data integration.

The power consumption of the GNX 21 is remarkably low, with only 0.35 W during the day and 0.4 W during the night. This ensures efficient energy usage and prolongs battery life.

For compass installations, the GNX 21 Marine Instrument requires a safe distance of 209 mm (8.25 in.) to avoid interference and maintain accurate readings.