GNX™ 20 displėjus - 4"

Yes, the GNX 20 display is specifically designed for excellent readability in daylight. It features a large 4-inch LCD screen with black numbers on a high-contrast light background. Additionally, its glass is treated with an anti-reflective coating to minimize glare and ensure optimal visibility even in full sunlight.

The GNX 20 display is highly versatile and can show more than 50 different navigation parameters from your NMEA 2000 network. Common data includes:

Basic data: Speed (through water and over ground), depth, heading.Wind data: Apparent and true wind (speed and angle).GPS data: Position, COG (course over ground), SOG (speed over ground).Engine data: RPM, temperature, pressure (if connected to the network).Navigation information: Waypoint data, cross-track error (XTE).

The main difference between the GNX 20 and the GNX 21 lies in the type of LCD display:

GNX 20: It uses a standard LCD screen with large black numbers on a white or colored background. This is the most common display type.GNX 21: It uses a reversed LCD screen (or negative) with white or colored numbers on a black background.

Yes, the GNX 20 display is designed for the marine environment and is waterproof to IPX7 standards. This means it can withstand accidental immersion in 1 meter of water for 30 minutes.

The GNX 20 is compatible with the following networks:

NMEA 2000: This is its primary connectivity. It connects directly to an NMEA 2000 network to receive and display data from all compatible sensors.

NMEA 0183: It can receive data from an NMEA 0183 device, but it cannot transmit data (receive-only).

Nexus: It is also compatible with Nexus instrument systems via the use of a GND 10 gateway (sold separately).

Yes, the GNX 20 display can be connected to a Nexus instrument network. To do this, you must use the Garmin GND 10 gateway (sold separately), which bridges the Nexus network and the NMEA 2000 network on which the GNX 20 operates.

The GNX 20 display is designed for flush-mount installation for a clean and integrated finish. The kit includes the sealing gasket and mounting hardware. It is important to cut the dashboard according to the provided mounting template for a perfect fit.

The GNX 20 display box contains everything needed for installation on an existing NMEA 2000 network:

The GNX 20 displayA clip-on trim ringA protective coverA gasket and mounting hardware for flush installationA NMEA 2000 T-connectorA NMEA 2000 drop cableThe product documentation

Yes, if your engine is equipped with a compatible NMEA 2000 gateway, the GNX 20 can display numerous engine data such as RPM, temperature, oil pressure, or even fuel consumption. The display will simply read the available data on the network.

Yes, the GNX 20 is fully customizable. You can configure up to 5 different display profiles, including dedicated profiles (sail, engine) and a user profile. In each profile, you can select which data pages to display and the layout of the information on each page (one, two, or three data fields).

Yes, the GNX 20 features an "Auto Power" function. When this option is enabled in the settings, the display powers on automatically as soon as the NMEA 2000 network it is connected to is powered up.

The GNX 20 display operates on a standard NMEA 2000 network. The required input voltage for the network must be between 9 and 16 Vdc. The maximum voltage supported by the unit itself is 32 Vdc.

Yes, for optimal readability of the GNX 20’s standard LCD screen, Garmin recommends installing it where the viewing angle is less than 45 degrees. Beyond that, screen contrast may decrease.

Yes, the GNX 20 has a network sharing function. You can configure it to synchronize its backlight color and intensity settings with other compatible Garmin displays and chartplotters on the same NMEA 2000 network. This ensures a uniform navigation console, both day and night.

Yes, absolutely. The GNX 20 is NMEA 2000 certified. This means it can display data from any sensor (depth sounder, vane anemometer, GPS, etc.) from another brand, provided that the latter is also NMEA 2000 certified.

The GNX 20 display is a 4-inch navigation instrument designed to display critical data from your network without cluttering your main screens. It allows you to view essential information such as speed, depth, and wind.

This display can receive and show various data from your sensors, including:

Speed (SOG, Bsp, etc.)Water depthWind data (speed and angle)Engine parametersBattery statusHeading direction

Yes, the GNX 20 display has an IPX7 waterproof rating, meaning it is designed to withstand temporary immersion in water.

The device features a 4-inch (approx. 10 cm) display for clear navigation data reading.

The display is protected by a glass lens with an antireflective finish, improving visibility even under strong light.

The instrument is designed to operate in various marine conditions, with an operating temperature range from -15°C to 70°C.

Yes, the device offers several profiles to suit your use case:

Powerboat: for powerboats.Sail Cruise: for cruising sailboats.Sail Race: for regattas.Custom: for a custom configuration.

The display weighs 247 g without its protective cover and 283 g when fitted with the cover.

Yes, the GNX 20 display natively communicates with sensors and connected devices via an NMEA 2000 network.

Yes, data from an NMEA 0183 device can be received using an optional data cable (not included).

Yes, data from Nexus instruments and sensors can be displayed using a GND 10 interface box (sold separately).

For the NMEA 2000 network, the input voltage must be between 9 and 16 Vdc.

Installation can be done in two ways: flat mount or flush mount in your dashboard.

Yes, a mounting template is included in the product box to help you precisely cut your mounting hole.

Yes, to ensure optimal visibility, the viewing angle must not exceed 45° for the standard model. Note that screen color inversion may occur if the angle is too steep.

To prevent corrosion of metal contacts, it is highly recommended to cover unused connectors with the weatherproof caps supplied with the device.

Yes. The product ships with everything required, including a gasket and template, to perform a clean and watertight flush mount.

If you install the device in fiberglass, use a countersink drill bit to drill only the top gelcoat layer. This will prevent cracks when tightening the screws.