The GMI 40 is a compact, easy-to-use multipurpose marine instrument that displays real-time data from compatible devices on its high-resolution touchscreen.
Features:
High-Resolution 4.3" touchscreen display
Wirelessly connects to the gWind sensor plus GDT 43 and GST 43 transducers
Supports 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
Eliminate Wires Through Your Mast
An easy-to-install solution that eliminates running wires through masts up to 50 feet
3-bladed propeller for more accurate wind speed in lighter wind conditions
Twin-fin design gives a more stable wind angle
Solar panel mounted on the transducer arm
Internal solar-charged battery lasts 3 years and is easily replaced
The gWind Wireless 2 transducer offers an easy-to-install solution that eliminates running wires through masts up to 50 feet. It sends accurate wind signals via an ANT® connection directly to a GNX™ Wind instrument or compatible Garmin GPSMAP® 8400/8600 series or GPSMAP 7400/7600 series chartplotters. The transducer features renowned Nexus® twin-fin technology with a 3-bladed propeller, providing more accurate wind speed and more stable wind angle in lighter wind conditions. Also available in wind and sail packs (sold separately) that can be used as stand-alone wind systems or expanded to full network systems via NMEA 2000®.
Specifications:
Unit Dimension, WxH: 13.6" x 24" (345 mm x 610 mm)
Weight: 350 g
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)
Power Usage: Battery (rechargeable through the solar panel)
Accuracy Angle: Better than ±1.5°
Speed: Better than ±3%
Wind Speed Range: 0. 8-90 knots (0. 4-50 m/s)
Wireless Connectivity: Yes
GDT™ 43 Depth & Temperature Transducer
This thru-hull transducer can read water depth and water temperature. It can retrofit an existing Nexus and Silva 43 mm thru-hull transducer (TH43). When bundled with the NMEA 2000® adapter, the GDT 43 can connect directly to the NMEA 2000 network, and the information can be displayed on a compatible Garmin chartplotter or instrument display. This transducer has a 0-20 degree deadrise.
The GST 43 is a thru-hull transducer that can read water speed and temperature. The transducer can retrofit an existing Nexus 43mm thru-hull transducer (TH43).
Bundled with the GST 10, the GST 43 can connect directly to the NMEA 2000® network, and the information can be displayed on a compatible Garmin chartplotter or instrument display.
In The Box:
2 GMI™ 40 marine instruments (two if that version is selected)
gWind™ Wireless 2 wind sensor
GDT™ 43 mm thru-hull depth and temperature transducer
GST™ 43 mm thru-hull speed and temperature transducer
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.