Garmin GNX 21 Marine Instrument
PART NUMBER: 010-01142-10
The easy-to-read GNX 21 marine instrument has an inverted display with white or colour 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 customisable 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.
¹Colour backlight is not visible in daylight.
Physical & Performance
| Physical dimensions | 110 x 115 x 30 mm (4.33" x 4.53" x 1.18") |
| Voltage range | 9-16 V (from NMEA 2000) |
| Mounting options | Flat or Flush |
| Display size |
83 x 60 mm; 101.6 mm diagonal (3.3” x 2.4”; 4.0” diagonal) |
| Water rating | IPX7 |
| Weight | 230 g (8 oz) |
| Display type | Inverted LCD, monochrome |
Features
| User profiles | Yes |
| Glass bonded display | yes |
| Power consumption |
0.35 W (day); 0.4 W (night) |
| Compass-safe distance | 209 mm (8.25 in.) |
| NMEA 0183 compatible | Yes |
| Temperature range | From 5° to 158°F (from -15° to 70°C) |
| NMEA 2000® certified | yes |
| Auto-on |
yes |
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