Garmin GT15M-TH Bronze Thru-Hull CHIRP Transducer – 600W, 8-Pin

The Garmin GT15M-TH is a bronze thru-hull transducer designed to deliver clear bottom detail, defined fish arches and effective target separation using traditional Mid-band CHIRP sonar.

Suitable for freshwater and saltwater fishing, it combines 600 W sonar output with an integrated water temperature sensor. Its bronze housing and stem make it particularly suited to wooden fishing boats.

Key Features

• Mid-band CHIRP sonar: Operates across 85–165 kHz for clear fish targets and bottom definition.
• 600 W power output: Supports traditional CHIRP sonar performance in a range of fishing conditions.
• Bronze thru-hull construction: Designed for installation through the boat’s hull.
• Depth and temperature: Provides depth readings and water temperature data.
• 8-pin connection: For compatible Garmin sonar equipment.
• Long installation cable: Supplied with a 50 ft cable for flexible routing.

Technical Specifications

Actual depth performance varies with water conditions, installation and the connected sonar equipment.

Compatibility and Installation

For use with compatible Garmin chartplotters, fishfinders or sonar modules supporting this transducer’s traditional CHIRP frequencies and power rating. An adapter may be required depending on the device.

This transducer provides traditional CHIRP sonar only; it does not provide ClearVü or SideVü scanning sonar.

Check hull suitability, deadrise and device compatibility before ordering. Install in accordance with Garmin’s installation instructions.