Garmin GT-21TM Transom Mount Transducer
The Garmin GT-21 transom mount transducer provides ultra-clear sonar images of objects, structure and fish as they pass below the boat.
- Traditional sonar at 600W at 50/200kHz frequencies
- CHIRP DownVu at 500W at frequencies of 260/455kHz
- Built-in temperature sensor
- 8 pin attachment
- Compatible with 4xdv, 5xdv, 7xdv, 9xdv, 721, 741, 840, 1040, 76xxxsv series machines