{"product_id":"garmin-afficheur-gnx21-4-pouces-nmea2000","title":"GNX™ 21: Navigation Instrument","description":"\u003cp\u003e\n    The \u003cstrong\u003eGarmin GNX™21-4\"\u003c\/strong\u003e marine display is a 4-inch dedicated marine instrument designed for optimal visualization of essential onboard data. Unlike the GNX 20, which uses a standard LCD screen, the GNX 21 features an inverted LCD screen, providing enhanced readability in various lighting conditions and viewing angles up to 50°. This feature is particularly advantageous at helm stations where viewing angles vary and clarity is critical, as the screen color inverts only beyond 60° in the 1 o’clock direction, compared to 30° in the 9 o’clock direction for the GNX 20.\n\u003c\/p\u003e\n\u003ch3\u003eData Integration and Display\u003c\/h3\u003e\n\u003cp\u003e\n    The \u003cstrong\u003eGarmin GNX™21-4\"\u003c\/strong\u003e natively integrates with an NMEA 2000 network, enabling the reception and display of data from compatible sensors and devices. It supports a wide range of NMEA 2000 PGNs, including system information (126992, 126996), rate of turn (127245), vessel heading (127250), engine parameters (127488, 127489), battery status (127508), water speed (128259), depth (128267), GNSS position data (129025, 129026, 129029, 129539), navigation warnings (129283, 129284, 129285), wind data (130306), and environmental parameters (130310, 130311, 130312). It also transmits PGNs such as transmission list of PGNs (126464), ISO requests (059392, 059904, 060928), and product information (61184, 126996). While it does not directly transmit NMEA 0183 data, it can receive information from an NMEA 0183 device via an optical data cable (not included), or from Nexus sensors via a GND™ 10 box (sold separately).\n\u003c\/p\u003e\n\u003ch3\u003eRobust Design and Technical Specifications\u003c\/h3\u003e\n\u003cp\u003e\n    Built for the marine environment, the \u003cstrong\u003eGarmin GNX™21-4\"\u003c\/strong\u003e features a fully waterproof polycarbonate housing and an anti-reflective glass lens. It meets IEC 60529 IPX7 waterproofing standards, resisting immersion up to 1 meter for 30 minutes. Its overall dimensions without the sunshade are 110 x 115 x 30 mm (H x W x D) and weighs 247 g, or 115 x 120 x 35.5 mm with sunshade for 283 g. The device operates within an extended temperature range of -15°C to 70°C (5° to 158°F) and maintains a 209 mm safe distance from the compass. Its maximum power consumption is 1.35 W, with an NMEA 2000 input voltage of 9 to 16 Vdc and a Load Equivalency Number (LEN) of 3 (150 mA at 9 Vdc).\n\u003c\/p\u003e","brand":"Garmin","offers":[{"title":"Default Title","offer_id":53723875541332,"sku":"010-01142-10","price":282.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main_80726c36-3974-4b87-915e-8ff346546cfd.png?v=1779185559","url":"https:\/\/skysat.fr\/en-gb\/products\/garmin-gnx21-4-inch-display-nmea2000","provider":"Skysat","version":"1.0","type":"link"}