Garmin GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 & 455kHz

Take coastal and offshore fishing to the next level with the Garmin GT21-TM Transom Mount Transducer. This dual-technology transducer combines traditional sonar with CHIRP ClearVü scanning to deliver clear arches, superior target separation, and sharp structure detail below your boat.

Traditional sonar performance at 50/200 kHz provides deep-water capability with up to 600 W, while the built-in CHIRP ClearVü element delivers high-resolution scanning at 260/455 kHz with 500 W of power. The fast-response temperature sensor adds real-time water temperature data for smarter on-the-water decisions.

• Transom-mount design for easy installation on a wide range of boats
• Traditional sonar: 50/200 kHz, up to 600 W
• CHIRP ClearVü: 260/455 kHz, up to 500 W
• Built-in fast response temperature sensor
• Includes an 8-pin transducer, mounting hardware, and installation instructions

Perfect for coastal and offshore fishermen who want both traditional sonar and CHIRP scanning sonar in one reliable package, the GT21-TM helps you see fish arches, identify structure, and gain the edge you need on the water.

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.