Garmin GTX330 transponder 11-33 volts operating range. Was taken out for a major avionics upgrade and works great.

Screen is still is great shape. Comes with radio tray, and backplate. Also comes with connector and backshell. Throwing in HD male pins and a TNC connector. Comes with everything you need to upgrade your old legacy transponder. Can also pre wire a harness for you to your existing encoder for a small fee if desired. Thanks