Garmin beam GT20-TM TRDX

Beam in plastic housing with mounting bracket. Can be used with Garmin Striker 4cv, 5cv echo sounders.

Perfect for shallow waters that want traditional and CHIRP ClearVü beam. This beam continuously displays clear images of objects, structure and fish passing under your boat. It is equipped with a built-in quick-response temperature sensor, has a power of 500 W; 1,900 feet (Traditional) and 750 feet (ClearVü) depth; operating frequency - 77/200 kHz (traditional) and 455 kHz (ClearVü), from 0 to 70 diameter. Follow the instructions carefully to avoid damage to the ship.

Installation instructions are included in the kit. Follow the instructions carefully.

In the link you can see the differences between the radiators, possible options for their selection and installation
https://www8.garmin.com/marine/PDF/transducer_selection_guide.pdf