Garmin Transom Mount Depth/Temp 50/200kHz - 8-PinUpgrade your Garmin sonar with a rugged transom mount depth and temperature transducer designed to replace older dual frequency models. This 8 pin, 500 W transducer delivers reliable depth readings down to 1,500 ft and accurate water temperature data for informed fishing and cruising. Dual frequency sonar: 50 kHz and 200 kHz operation for flexible cruising and bottom tracking High power depth reach: 500 W transducer with a maximum depth of 1,500 ft