The Garmin GSD 25 Premium Sonar Module is a standalone network sonar unit engineered for serious sportfishermen running multi-display MFD setups. Dual-channel 1 kW CHIRP sonar teams with CHIRP DownVü and SideVü scanning to resolve tightly grouped targets with exceptional clarity at depths reaching 5,000 feet — sending that high-resolution data straight to compatible Garmin chartplotters. Note that the transducer is sold separately; Garmin proprietary transducers are recommended for best results.

Specifications:

• Dual-channel 1 kW CHIRP traditional sonar
• Adjustable CHIRP frequency pairings: low/medium, low/high, and medium/high
• CHIRP DownVü and SideVü scanning sonar
• Maximum depth capability: 5,000 feet
• Transducer connections: 8-pin and 12-pin
• Compatible devices: GPSMAP 8000 Glass Helm Series, GPSMAP 7400/7600 Series Displays
• Remote network sonar module designed for networked MFD installations

In the Box:

• GSD 25 sonar module
• Right-angle power cable (6 feet)
• Right-angle network cable (6 feet)
• Mounting hardware
• Documentation

Resources:

• Product Brochure (PDF)

⚠️ California Prop 65 Warning: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.