SKU: 86078139070

Garmin Gnx21 Instrument Display Nmea 2000 Compatible

Sale price$193.36 Regular price$214.84
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Description

Garmin Gnx21 Instrument Display Nmea 2000 CompatibleThe 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

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.

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 Digits

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 21 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

Specifications

  • Unit dimensions (HxWxD): 11 cm x 11.5 cm x 3 cm
  • Display size (diagonal): 4.0" (10.16 cm)
  • Weight: 230 g (8 oz)
  • Temperature range: From 5° to 158°F (from -15° to 70°C)
  • Display type/color: Inverted LCD, monochrome
  • Maximum digit height: 36.4 mm
  • Glass-bonded display: Yes
  • Multiple color schemes: Yes
  • Sailboat, powerboat, customizable user-profiles: Yes
  • Power consumption: 0.35 W (day); 0.4 W (night)
  • NMEA 2000® and NMEA 0183 compatible: Yes
  • Single, dual and triple functions: Yes
  • Graphs: Yes
  • Flush/Flat mount capable: Yes
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86078139070

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C
caleb downing
Grantham, US
★★★★★ 5
Reliable Replacement Parts That Work Well
Color: Saros 10r-20/Qrevo Curvx Accessories
These replacement parts have worked very well with our machine so far. The fit was accurate, installation was straightforward, and everything lined up the way it should without needing any adjustments. Performance has been just as good as the original parts we were replacing. Once installed, the machine operated normally, and I haven’t noticed any issues with function or compatibility during regular use. Overall, this is a dependable set of replacement parts to keep on hand for routine maintenance or unexpected breakdowns. Having extras available makes repairs a lot easier when something eventually wears out or needs to be swapped.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
A
Amazon Customer
Lowell, US
★★★★★ 5
Solid replacement kit for the Roborock Saros - everything you need in one pack
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
Everything in this kit fits my Roborock Saros without any issues. The main brushes, side brushes, mop pads, filters, and dust bags all installed the same way as the originals, and nothing felt loose or off. The kit comes with a lot of parts too, so I have plenty of spares to work through before needing to reorder anything. The quality on the individual pieces looks good. The main brushes feel solid and the rubber fins on them look well formed. The mop pads have a dense microfiber texture on one side and a rougher scrubbing surface on the other, and they feel comparable to the OEM pads. The dust bags are the sealed filter bag style with the gray plastic collar, same as the stock ones, and the filters look like they have the same fine media as the originals. Overall this is a good replacement kit if you have one of the compatible Saros models and want to stock up on all your consumables at once.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
S
S.C.
Phoenix, US
★★★★★ 4
Fully Functional Replacement Set
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
This 28-pack accessories kit is a highly functional and convenient option for maintaining your robot vacuum. It comes fully loaded with all the essentials, and every single part—from the main brushes to the mop pads and dust bags—fits the Saros 20. In terms of daily performance, the pieces work exactly as advertised, capturing dust and mopping floors effectively to keep your cleaning routine on track.The only drawback is that the material quality is not quite as good as the original brand-name parts. The plastic on the brushes and the fabric on the filters feel a bit thinner, meaning they may not last as long as the originals before needing another swap. However, given the sheer volume of pieces you get for the price, it remains a reliable, budget-friendly choice that gets the job done.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
S
Verified Purchase
S. McCarty
Lexington, US
★★★★★ 5
Excellent fit and value - recommended buy
Size: 3+12+12+2+1 pack
I rarely write reviews, but I'm so impressed by the fit and quality of this set that I made an exception. I'd been running my eufy 11S without brushes, and have been cleaning and reusing the filters for a while now and finally decided to buy replacements. The kit came packed well with everything in order and no damage. I replaced all of the worn parts and installed the brushes and did a test run - everything worked great. I expected some fitment issues because I've seen that with other kits, but I had no issues. The fact that you get multiples of almost everything is icing on the cake. Oh, and I wasn't paid or given anything in exchange for this review, as much as that's worth now, haha. I can recommend getting this kit for your robot vacuum, if it's the right set for your model.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2025
L
Verified Purchase
LGN
West Palm Beach, US
★★★★★ 5
Good option for an aftermarket replacement solution.
Size: 3+12+12+2+1 pack
I've been very happy with this product. I think it is a good price point for what is included. Everything was a directly compatible and everything fit as you would expect. The filter quality is good and since there are plenty in the kit I find I change the filters more often which is probably a good thing. I recommed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2025

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