The Garmin GT12M is a flush-mount bronze thru-hull transducer built for midsize fishing and cruising vessels where reduced drag and reliable bottom tracking matter. Mid-band CHIRP technology delivers sharp fish arches, clear structure definition, and accurate depth returns down to 800 ft in saltwater and 1,200 ft in freshwater. Auto-ID plug-and-play compatibility means the sonar unit configures itself automatically when the transducer is connected, and the bronze housing suits fiberglass, composite, and wood hulls across a 16°–24° deadrise range without requiring a fairing block.

In the Box:

• GT12M-THF transducer
• Jam nut
• Washer
• Documentation

Specifications:

• Transducer Type: Mid-band CHIRP traditional sonar
• Frequency Range: 85–165 kHz
• Power Output: 350 W
• Beamwidth: 24°–16°
• Maximum Depth: 800 ft saltwater / 1,200 ft freshwater
• Cable Length: 50 ft
• Sensing: Depth and temperature
• Connector: 8-pin
• Housing Material: Bronze
• Supported Deadrise Angle: 20° version supports hull deadrise angles from 16° to 24°
• Mount Type: Thru-hull flush mount

Resources:

• Installation Guide (PDF)