Garmin GT20-TM 4 Pin Transom Mount Transducer

Overview

Mounted on the transom using a Railblaza Transducer Arm or a trolling motor, this transducer is designed to display clear fish arches plus sharper imaging of bottom contours, structure and targets as you move over them.

Key Features

• Traditional sonar plus ClearVü scanning helps separate fish from structure for clearer target interpretation.
• 500 W power supports strong returns and consistent performance for typical inshore and freshwater fishing.
• Fast-response temperature sensor provides water temperature readings through the transducer.
• 20 ft (6.1 m) cable offers flexible routing on small boats, inflatables and transom setups.
• Transom angle support from 0° to 70° helps fit a wide range of hull and mounting positions.

Specifications

• Power rating is 500 W.
• Maximum depth is up to 1,900 ft on traditional sonar depending on conditions.
• Maximum depth is up to 750 ft on ClearVü depending on conditions.
• Operating frequency is 77/200 kHz for traditional sonar.
• Operating frequency is 455 kHz for ClearVü scanning.
• Cable length is 20 ft with an integrated temperature sensor.
• Supported transom angle range is 0° to 70°.

What’s Included

• Transducer includes transom mount hardware and a trolling motor mount option.
• Installation instructions are included to help position and secure the transducer correctly.

Installation Notes

• Mounting height and angle are critical for clean readings so follow the supplied instructions carefully.
• Route the cable away from power lines where possible to reduce interference and maintain a tidy install.
• On inflatables, use a rigid transducer mounting solution so the transducer remains stable at speed.

FAQs

Is the Garmin GT20 suitable for shallow-water fishing?

Yes, it’s designed for shallow-water use and combines traditional sonar with ClearVü scanning for better detail on structure and fish.

Does it show water temperature?

Yes, the cable includes a built-in fast-response temperature sensor for water temperature readings.

How deep can it read?

It’s rated up to 1,900 ft on traditional sonar and up to 750 ft on ClearVü, with real-world results depending on water conditions and installation.

What frequencies does it use?

It operates at 77/200 kHz for traditional sonar and 455 kHz for ClearVü scanning.

Will it work on an inflatable boat?

For mounting on a SIB consider the Railblaza Transducer Kit

What’s the cable length?

The transducer includes a 20 ft cable which is typically plenty for small boats and compact helm layouts.

Shipping Cost

Shipping this item to mainland UK is:

Please see all our Shipping Fees here.

For overseas shipping fees please Contact Us.

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