Garmin GT20-TM 4 Pin Transom Mount Transducer. Get ultra-clear sonar pictures of objects, structure and fish that pass below your boat. 20 ft transducer cable features a built-in fast response temperature sensor. Comes with installation instructions, transom and trolling motor mounts. Follow the instructions carefully to avoid damaging your boat.

Power: Traditional 500 W, ClearVu 500 W
Frequency: Traditional 77/200; ClearVu CHIRP 455 kHz (435-475 kHz) & 800kHz (800-840 kHz)
Maximum Depth: Traditional 1,900 ft, ClearVu 750 ft.
Transom Angle: 0 - 70 degrees