GMI 40 is the compact, easy-to-use multipurpose marine instrument that provides real-time data from your compatible devices on its high-resolution touchscreen display.
Features:
High-Resolution 4.3" touchscreen display
Easily connects to onboard sensors and engines
Displays real-time wind, speed, depth, heading, engine, fuel data, and more from your compatible devices
Integrates with NMEA 2000® and Garmin Bluenet™ networks
Software updates via Activecaptain® smartphone app
Wirelessly shares data to your Garmin marine smartwatch
SLEEK & STREAMLINED
This modern touchscreen display has an intuitive interface and edge-to-edge glass that complements the look of your Garmin chartplotters.
COMPLETELY INTEGRATED
As an NMEA 2000-certified device, your GMI 40 marine instrument integrates smoothly with compatible systems across your boat.
SIMPLE YET CUSTOMIZABLE
Flexible gauge sets and page layouts let you place the data you need exactly where you want it.
A NETWORK YOU CAN TRUST
Garmin BlueNet offers streamlined connectivity with compatible Garmin devices for full-system integration.
SEAMLESS DATA
See the shift before you feel it with easy-to-read real-time wind, speed, depth, and heading insights from your compatible devices.
SIMPLIFIED ENGINE DATA
See engine and fuel data from your compatible devices at a glance to easily monitor levels and optimize performance.
Specifications:
Dimension: 4.53" x 3.58" x 1.18" (115 mm x 91 mm x 30 mm)
Weight: 0.53 lbs (240 g)
Water rating: IPX7
Display Type: WVGA, IPS LCD
Display Size: 4.3" diagonal; 3.68" x 2.21" (109 mm diagonal; 93.6 mm x 56.2 mm)
Display resolution: 800 x 480 pixels
Mounting Options: Flush mount
Input: Touchscreen
Glass-bonded display
Temperature range: From 5° to 158° F (from -15° to 70° C)
Voltage range: 9 to 32 Vdc
Power Consumption: 2.5 W typical; 4.4 W max
Compass-safe distance: 5.9" (150 mm)
Garmin BlueNet network ports: 1
gWind™ Wired Wind Sensor
Three-bladed propeller for more accurate True Wind Speed (TWS) in lighter air
Twin-fin design gives a more stable True Wind Angle (TWA)
Optical reading technique for superior performance at low wind speeds with excellent linearity
GND™ 10 black box bridges NMEA 2000® data to Nexus Network and enables Garmin-compatible chartplotters to integrate with Nexus sail equipment and vice versa
Easy plug-and-play installation between Nexus, Garmin chartplotters, NMEA 2000, and USB
The gWind transducer features twin-fin technology with a 3-bladed propeller for more accurate TWS in lighter air, while the twin-fin design gives a more stable TWA. The 3-bladed propeller, unlike a cup design, is always efficient. Combined with optic reading, this transducer provides superior accuracy at low wind speeds and also provides excellent linearity.
The included GND 10 black box bridge enables the Nexus Network and compatible Garmin chartplotters to share critical NMEA 2000 data. The GND 10 enables Garmin chartplotter owners to use Nexus sail equipment and vice versa. Available in 2 bundles (sold separately).
Specifications:
Unit Dimension, WxH: 13.6" x 24" (345 mm x 610 mm)
Weight: 260 g
Cable Length: 25 m
Waterproof: Yes (IPX6¹)
Temp Range: From 5°F to 158°F (-15°C to 70°C)
Storage Temperature: From -4°F to 176°F (-20°C to 80°C)
Voltage Range: 9-16V
Power Usage: 0.33W
Typical Current Draw at 12 VDC: 28 mA
Compass Safe Distance: N/A
Accuracy Angle: Better than ±1.5°
Speed: Better than ±3%
Wind Speed Range: 0. 8-90 knots (0. 4-50 m/s)
NMEA 2000® Load Equivalency Number (LEN): N/A
Wireless Connectivity: No
Airmar® DST820 Smart Transducer
This plastic thru-hull NMEA 2000® smart transducer combines precise depth, speed, and temperature signals with attitude sensing for heel/trim and pitch/roll data. It can read depths to 330 feet and offers fast 5 Hz water speed signal output for smoother visualization on compatible chartplotters or other displays.
Wireless Bluetooth® connectivity makes it easy to manage calibration of sensor data through the AIRMAR Cast™ app interface. And the 235 kHz sensor operating frequency helps prevent mutual interference with other echosounder devices on the vessel. The transducer’s wide, fan-shaped beamwidth of 10 x 44 degrees enables it to find bottom even when installed on steep deadrise hulls or heeling sailboats.
Specifications:
Transducer frequency: 235 kHz
Transducer power: 100 W
Transducer beamwidth: 10 x 44 degrees
Transducer maximum depth: 330 ft
Transducer depth/speed/temperature: Depth, Temperature, and Speed
Transducer number of pins: NMEA 2000
Transducer supported deadrise/transom angles: 0 to 22 degrees
In The Box:
2 GMI™ 40 marine instruments (two if that version is selected)
gWind™ wired wind sensor
GND™ 10 black box bridge
Airmar® DST820 thru-hull 52mm depth, speed, and water temperature smart transducer
Field-installable mast cable connector
Mast bracket
Mast cable with female connector (25 m)
For the NMEA 2000® network: 2 m backbone/drop cable (3x), 5 T-connectors, power cable, and terminators
Standard ground shipping is free for orders over $250. This excludes some products such as hazardous or oversized items. Learn More
30 Day return policy: Products returned in original packaging will be refunded if returned within 30 days of purchase. Products purchased after 30 days may be returnable subject to a restocking fee.