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Garmin GNX 21 Marine Instrument

PART NUMBER: 010-01142-10

Garmin GNX 21 Marine Instrument

010-01142-10
$521.55
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Features 
The easy-to-read GNX 21 marine instrument has an inverted display with white or color digits on a black background that clearly shows depth, speed, wind and 50-plus marine and boat parameters. Its glass-bonded display with anti-glare lens coating provides excellent daytime and nighttime readability with high-contrast digits scalable up to 36 mm.

The GNX 21 is the first glass-bonded marine instrument with a combination of directly driven LCD segments and a dot-matrix field to display graphical information. Its low power consumption — (25 mA) with 350 mW (no backlight)/400 mW (mid-level backlight) — is perfect for use on sailboats, and provides a valuable instrument for cruising and fishing. Fully customizable user profiles display wind, depth and speed data. Plus, the GNX 21 includes an auto-scroll feature that rotates through data screens for hands-free operation. It can be installed with the included low profile flush mount or an optional flat mount for the ultimate glass helm solution and custom look for your boat.

¹Color backlight is not visible in daylight.
Tech Specs 
Physical & Performance
Display size
83 x 60 mm; 101.6 mm diagonal

(3.3” x 2.4”; 4.0” diagonal)

Physical dimensions 110 x 115 x 30 mm (4.33" x 4.53" x 1.18")
Voltage range 9-16 V (from NMEA 2000)
Water rating IPX7
Weight 230 g (8 oz)
Mounting options Flat or Flush
Display type Inverted LCD, monochrome
Features
NMEA 0183 compatible Yes
Auto-on yes
Temperature range From 5° to 158°F (from -15° to 70°C)
Glass bonded display yes
User profiles Yes
NMEA 2000® certified yes
Compass-safe distance 209 mm (8.25 in.)
Power consumption
0.35 W (day); 0.4 W (night)
In the Box 
GNX 21
Trim piece snap cover
Protective cover
Flush mount gasket and hardware
NMEA 2000® T-connector
NMEA 2000 drop cable
Installation instructions
Documentation

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