GARMIN GT54UHD-TM 12-Pin Depth/Temp UHD Scanning Sonar
The GARMIN GT54UHD-TM is a 12-pin depth and temperature UHD scanning sonar with a 20-foot cable, operating at frequencies of 150 to 240 kHz CHIRP, 800 kHz, and 1200 kHz. This unit is installed on fishing boats and yachts to deliver detailed underwater imaging and precise temperature data.
Compatibility & Applications
- Mounts on fishing boats, yachts, and center consoles.
- Pairs with GARMIN chartplotters for enhanced sonar imaging.
- Integrates with NMEA 2000 networks for seamless data sharing.
- Replaces older GARMIN sonar models for upgraded performance.
- Fits on vessels ranging from 18 to 30 feet in length.
- Wires to 12V DC systems for power supply.
- Includes transducer mounting hardware for easy installation.
- Compatible with both freshwater and saltwater applications.
The unit provides high-resolution sonar imaging and temperature data, making it essential for deep-sea fishing and recreational boating. Its drop-in replacement capability for older GARMIN sonar transducers ensures straightforward upgrades without requiring additional modifications, enhancing the user’s ability to locate fish efficiently.







