Garmin GNX™ 20 Marine Instrument w/Standard Display - 4"

SKU: 52645 - UPC: 753759996932 - MPN: 010-01142-00
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$358.99 $449.99 ( / )

Available Stock : 19

Equip your vessel with the reliable Garmin GNX 20 marine instrument, a compact 4-inch powerhouse designed for sailors, cruisers, and anglers who demand clear, dependable data on the water. This standard display unit stands out with its hybrid LCD technology, blending large segmented digits up to 36mm tall for instant...
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Garmin GNX™ 20 Marine Instrument w/Standard Display - 4" Product Description

Equip your vessel with the reliable Garmin GNX 20 marine instrument, a compact 4-inch powerhouse designed for sailors, cruisers, and anglers who demand clear, dependable data on the water. This standard display unit stands out with its hybrid LCD technology, blending large segmented digits up to 36mm tall for instant readability alongside a dot-matrix area for graphs and trends. Whether tracking water depth in shallow bays, monitoring GPS speed during a race, or gauging wind shifts on a long passage, it pulls from over 50 NMEA parameters to keep you informed without cluttering your helm.

Standout Display Technology for Any Conditions

The GNX 20's glass-bonded LCD eliminates fogging and reflections, ensuring sharp black digits against a white or customizable color backdrop. High-contrast visibility shines from dawn patrols to midnight watches, with an anti-glare lens that cuts through harsh sunlight. Switch between seven backlight shades or dial in your own hue for personalized night viewing that doesn't strain your eyes.

Tailored Profiles for Sail and Power Boaters

Customize your view with five layout options: single-field focus for speed bursts, dual or triple readouts for multitasking, or graph mode to visualize trends like wind angles over time. Sailors appreciate dedicated profiles for true wind speed and depth alarms, while powerboaters prioritize engine data alongside water temp. The auto-scroll cycles screens at your preferred pace, freeing your hands for the helm.

Efficient Power Draw for Extended Adventures

Sipping just 350mW in daylight (no backlight needed) and 400mW at mid-backlight levels, this instrument is a battery whisperer. Ideal for offshore sails where every amp counts, it lets you unplug from the generator longer. Pair it with solar setups or efficient house banks without worry, maintaining full functionality across -15°C to 70°C temperatures.

Seamless NMEA Integration

Connect via NMEA 2000 for a network of insights—GPS track, sea temp, apparent wind, even crew-overboard alerts from compatible sensors. An optional cable bridges NMEA 0183 gear, future-proofing your setup. IPX7 waterproofing shrugs off spray, rain, or submersion, built tough for real-world marine abuse.

Versatile Mounting Options

Flush-mount for a sleek glass helm aesthetic or opt for flat-mount hardware (sold separately) to blend into consoles. At 4.33 x 4.53 x 1.18 inches and under 8 ounces, it nests neatly without dominating space.

Complete Kit for Quick Setup

  • GNX 20 marine instrument
  • Trim piece snap cover for clean finishes
  • Protective cover for storage
  • Flush mount gasket and hardware
  • NMEA 2000 T-connector and drop cable
  • Quick-start documentation

Why Boaters Choose the GNX 20

For coastal cruisers, it simplifies navigation by overlaying depth soundings with speed logs, helping dodge shallows. Anglers rely on water temp graphs to chase thermoclines, while racers dissect wind data for tactical edges. Unlike bulkier multifunction displays, its focused marine metrics reduce decision fatigue, letting you sail smarter. Regular firmware updates from Garmin keep it evolving with your needs, ensuring longevity on multiyear voyages.

Technical Specifications at a Glance

Specification Details
Display Size 4 inches diagonal
Dimensions (L x W x H) 4.33" x 4.53" x 1.18"
Weight 230g (8 oz)
Waterproof Rating IPX7
Power Consumption 0.35W day / 0.4W night
Temp Range -15°C to 70°C (5°F to 158°F)
Connectivity NMEA 2000 / 0183 compatible

Frequently Asked Questions

Can the Garmin GNX 20 display data from multiple sensors?

Yes, it supports over 50 marine parameters via NMEA 2000, including inputs from depth transducers, speed logs, wind sensors, and GPS units for a comprehensive dashboard.

Is the GNX 20 suitable for sailboats?

Absolutely, its ultra-low power draw and customizable sail-specific profiles make it perfect for long passages where conserving battery is key.

How does the glass-bonded display perform in fog or rain?

The bonded glass prevents internal fogging, and the anti-glare coating maintains clarity even in misty or rainy conditions.

What mounting options are available?

It includes flush-mount hardware for a low-profile install, with optional flat-mount kits for surface consoles.

Does it support auto-scrolling through data screens?

Yes, configurable auto-scroll lets screens rotate hands-free at your set interval, ideal for monitoring without constant input.

Can I customize the backlight colors?

Choose from seven preset colors or mix your own for optimal low-light visibility tailored to your eyes and helm lighting.

The easy-to-read GNX 20 marine instrument display with black digits on a white or color background 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 Millimeter. The GNX 20 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 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 20 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.

Garmin 100114200 Attributes

  • Display Size: 4 Inch
  • Display Type: LCD
  • Interface: Keypad
  • Dimensions: 4.33 Inch Length X 4.53 Inch Width X 1.18 Inch Height
  • Waterproof: IPX7 Rating Waterproof

Garmin 100114200 Features & Benefits

  • Low Power Consumption
  • Fully Customizable User Profiles For Sail Or Power Boating To Display Most Important Marine And Vessel Data
  • Glass-Bonded Display With Anti-Glare Lens Avoids Fogging
  • Large, Easy-To-Read Black Digits And Graphs On A White Or Color Background Provides High Contrast And High Visibility; Choose From 7 Customizable Backlight Colors
  • 5 Display Configurations Plus Gauge And Graph Mode To Display Depth, Speed, Wind And 50+ Marine And Boat Parameters
  • Limited 1 Year Warranty

Garmin 100114200 Installation Instructions

Garmin 100114200 Warranties


GNX™ 20 Marine Instrument with Standard Display - 4"

Marine Instrucment with Standard 4" LCD

  • Large, easy-to-read black digits and graphs on a white or color background provides high contrast and high visibility; choose from 7 customizable backlight colors
  • Glass-bonded display with anti-glare lens avoids fogging
  • Fully customizable user profiles for sail or power boating to display most important marine and vessel data
  • Low power consumption (25 mA) with 350 mW (no backlight)/400 mW (mid-level backlight)
  • 5 display configurations plus gauge and graph mode to display depth, speed, wind and 50+ marine and boat parameters

The easy-to-read GNX 20 marine instrument display with black digits on a white or color background 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 20 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 20 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.

Easy-to-Read Display

Unique high-contrast hybrid display features large, easy-to-read digits scalable up to 36 mm tall. Offers excellent clarity in direct sunlight, at dusk, or at night. The dot-matrix section can show additional details and/or graphical information.

Glass-Bonded Display

Glass-bonded display helps prevent fogging, and the anti-glare lens finish increases visibility.

Customizable Color Background

Choose from 7 different backlight colors, or even create a customized color, to achieve the screen that provides optimum readability for you.

Customizable User Profiles

Fully customizable user profiles allow you to choose from 5 available display configurations for sailboat or powerboat user-profiles: single, dual and triple function, plus gauge and graph mode to display wind, depth and speed data, or customize the pages to display the marine and boat data that is most important to you.

Auto Scroll

Set your display to automatically cycle between pages at a speed you set for convenient, hands-free operation.

Low Power Consumption

Perfect for sailors who want to sail for long intervals without having to run a motor or generator to charge batteries. The GNX 20 uses only 25 mA with 350 mW daytime usage, requiring no backlight and just 400 mW with a mid-level backlight setting at night.

NMEA® 2000

Monitor more than 50 marine and boat parameters, including GPS speed, water depth and temperature, wind direction, and wind speed from the NMEA 2000 bus. You can also add a NMEA 0183 device using the optional 7-pin bare-wire power/data cable.

In The Box

  • GNX 20
  • Trim piece snap cover
  • Protective cover
  • Flush mount gasket and hardware
  • NMEA 2000® T-connector
  • NMEA 2000 drop cable
  • Installation instructions
  • Documentation


The easy-to-read GNX 20 nautical instrument display clearly shows depth, speed, wind direction and more than 50 nautical and ship parameters. Its glass-bonded display has an anti-glare lens coating and can be used in various occasions.

Garmin NMEA 2000 Starter Kit
Garmin NMEA 2000 Power Isolator


Frequently Asked Questions (FAQ) About Garmin GNX™ 20 Marine Instrument w/Standard Display - 4"

Who is the Garmin?
How to describe Garmin GNX™ 20 Marine Instrument w/Standard Display - 4"?
What is the screen size of the product?
What is the weight of the product?
Is this product waterproof?
What is the display type of the product?
What is the display size of the product?
What is the shape of the product?
What is the controlling interface of the product?
What is the dimensions of the product?
What is the instrument function of the product?

Who is the Garmin?

Garmin is a leader in Global Positioning System (GPS) technology and an innovator in consumer electronics. Garmin serves both the aviation and consumer markets. Garmin's products are used in flying, boating, driving, hiking, and many other activities. Specifically, Garmin aims to enrich the lives of customers, suppliers, distributors, and employees by providing the very best products that offer superior quality, safety, and operational features at affordable prices.

How to describe Garmin GNX™ 20 Marine Instrument w/Standard Display - 4"?

The easy-to-read GNX 20 nautical instrument display clearly shows depth, speed, wind direction and more than 50 nautical and ship parameters. Its glass-bonded display has an anti-glare lens coating and can be used in various occasions.

What is the screen size of the product?

4"

What is the weight of the product?

2.066

Is this product waterproof?

IPX7 Rating Waterproof

What is the display type of the product?

LCD

What is the display size of the product?

4 Inch

What is the shape of the product?

Square

What is the controlling interface of the product?

Keypad

What is the dimensions of the product?

4.33 Inch Length X 4.53 Inch Width X 1.18 Inch Height

What is the instrument function of the product?

Multifunction


Save $91 when you buy the Garmin GNX™ 20 Marine Instrument w/Standard Display - 4" for only $358 from NVN Marine! Same day shipping before 3pm.

Garmin GNX™ 20 Marine Instrument w/Standard Display - 4" Technical Specifications

Type: 

Marine Navigation & Instruments | Instruments

Vendor: 

Garmin

Weight: 

2.07 lb

Shape: 

Square

Screen Size: 

4"

Instrument Function: 

Multifunction

Product Manual: 

Download PDF

Product Brochure: 

Download PDF

Product Installation: 

Download PDF

Garmin GNX™ 20 Marine Instrument w/Standard Display - 4" User Reviews

Garmin GNX™ 20 Marine Instrument w/Standard Display - 4" Shipping & Return

Shipping Weight: 

2.07 lb

Box Sizes: 

5.00 (h) x 9.00 (w) x 10.00 (l)

Cubic Feet: 

450.0

Returnable: 

Yes

P65: 

Yes

For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.

Garmin GNX™ 20 Marine Instrument w/Standard Display - 4"

$358.99 $449.99 ( / )

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