The link to Garmin Airmar DT800 20° Tilted-Element Thru-Hull Transducer has been copied
The Garmin Airmar DT800 smart thru-hull transducer provides depth and temperature data to your NMEA 2000 network. This 100W transducer reaches a depth of 600' and features an operating frequency of 235 kHz, a beamwidth of 12 degrees, and a 16 to 24 degree deadrise. Durable plastic construction will resist corrosion in a marine environment. Transducer kit comes with installation instructions.