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Garmin GT20-TM
Transom Mount DownVü 500 W (455/800 kHz)
Traditional 500 W (77/200 kHz) Transducer with Temp (4-pin)

Discontinued. Replaced by the Garmin CV20-TM (4-pin) transducer >>

Get ultra-clear sonar pictures of objects, structure and fish that pass below your boat with this all-in-one 4-pin transducer.

This 20 ft transducer cable with built-in fast response temperature sensor has a power rating of 500 W; a depth of 1,900 ft (traditional) and 750 ft (DownVü); an operating frequency of 77/200 kHz (traditional) and 455 kHz (DownVü); and a 0 to 70 transom angle.

Transducer comes with transom and trolling motor mounts, and installation instructions. Follow the instructions carefully to avoid damaging your boat.


Weight: 0.73 lbs. (0.33 kg)
Cable length: 20’
Number of pins on connector: 4
          Transducer: 5.9 x 2.0 x 0.9 in (150 x 52 x 22 mm)
          Traditional: 77/200 kHz
          DownVü: CHIRP 435-475 kHz and CHIRP 800-840 kHz
Transmit power:
          Traditional: 500 W
          DownVü: 500 W
Max Depth: 
          Traditional: 1,900 ft
          DownVü: 750 ft
Beam Width (°) LF/HF (-3dB):
          Traditional: 45/15
          DownVü: 2.5x53
Read water temperature: Yes

Compatible with:
Garmin echo 151dv, 201dv, 301dv, 551dv

Garmin echoMAP 43dv, 44dv

Garmin echoMAP 53dv, 54dv
Garmin echoMAP 73dv, 74dv
Garmin echoMAP 73sv, 74sv
Garmin echoMAP 93sv, 94sv
Garmin echoMAP CHIRP 4dv series
Garmin echoMAP CHIRP 5dv series
Garmin STRIKER 4dv
Garmin STRIKER 5dv
Garmin STRIKER 7dv
Garmin STRIKER 7sv

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Garmin downvu transducer
Garmin GT20-TM - All-in-one HD-ID™ and DownVu Transducer (4-pin)

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