HawkEye D10DX.06T In-Dash Depth Sounder with Air and Water Temperature (Includes Airmar Thru Hull Transducer) Airmar Thru Hull Transducer. Instant Depth Updates Air Temperature Readings, Water Temperature Readings The transducer requires a 2" hole be drilled in the bottom of the boat. Please follow the user manual available under product details. Two Year Warranty