The Garmin GMI™ Wired Start Pack 52 delivers everything needed to build a capable onboard instrument network from the ground up. The bundle pairs the GMI 20 marine instrument display with the gWind™ transducer and AIRMAR® DST810 thru-hull smart transducer, giving you real-time wind, depth, speed, and temperature data over a plug-and-play NMEA 2000® backbone that scales easily as your network grows.

The GMI 20 features a 4" glass-bonded color display with anti-glare finish, 170-degree viewing angle, and extra-large digits readable at distance. Night-visibility color schemes (red/black, green/black, or standard night mode) and a dimmer control keep the display useful after dark. Auto-scroll cycles through pages hands-free — a particular advantage for sailors mounting units in varied locations. Over 100 marine and vessel parameters are supported, and default profiles for powerboat, sailboat, fishing, and engine/fuel use can be customized. Power is drawn directly from the NMEA 2000 network.

The gWind transducer uses a twin-fin design paired with a 3-bladed propeller and optical reading to deliver stable True Wind Angle (TWA) and accurate True Wind Speed (TWS) even in light air — advantages the propeller maintains over a cups-style design across all wind speeds.

The AIRMAR DST810 thru-hull smart transducer measures depth to 330 feet, outputs water speed at 5 Hz, operates at 235 kHz with a 10 × 44-degree fan-shaped beam, and senses heel/trim and pitch/roll attitude data for the NMEA 2000 network. Bluetooth® connectivity allows DST810 calibration via the AIRMAR CAST™ app, with advanced speed calibration available at multiple heel angles and speeds.

Specifications:

• Display: 4" bright color glass-bonded lens, anti-glare finish
• Viewing angle: 170 degrees
• Supported parameters: depth, speed, wind, and 100+ marine/vessel parameters
• Night mode color schemes: red/black, green/black, standard night mode with dimmer control
• Auto-scroll paging: yes
• Customizable profiles: powerboat, sailboat, fishing, engine/fuel, and user-specified
• GMI 20 power source: NMEA 2000 network
• gWind transducer design: twin-fin with 3-bladed propeller and optic reading
• DST810 max depth: 330 feet
• DST810 water speed output: 5 Hz
• DST810 operating frequency: 235 kHz
• DST810 beamwidth: 10 × 44 degrees (fan-shaped)
• DST810 data: depth, speed, temperature, heel/trim, pitch/roll
• DST810 calibration: Bluetooth® wireless via AIRMAR CAST™ app; advanced multi-angle/multi-speed calibration
• Network: NMEA 2000® plug-and-play; compatible with Garmin chartplotters

In the Box:

• GMI™ 20 marine instrument
• gWind™ transducer
• GND™ 10 black box bridge
• AIRMAR DST810 thru-hull smart transducer
• 2× NMEA 2000® drop cable (2 meters each)
• NMEA 2000 power cable
• 4× NMEA 2000 T-connectors
• NMEA 2000 terminators
• Mast cable with female connector (25 meters)
• Nexus network cable (5 m, straight connector)
• Nexus female field-installable connector
• Mast bracket
• Mounting hardware
• Documentation