DT800 NMEA 2000 Thru-Hull Tilted Element Smart Sensor - 20Adeg Function: Depth / Temperature, Material: Plastic, Fixed Tilt Angle: 20Adeg Frequency: 235 kHz, Cone: 12Adeg, Power: 100 Watts RMS Connector: 5-Pin NMEA 2000 Features: Low-profile, retractable, thru-hull transducer offers depth and temperature functions in a single, compact housing Tilted Element Transducer - unique design tilts ceramic element inside transducer housing, giving all the advantages of a fairing block without a hull protrusion Available in fixed 0Adeg, 12Adeg or 20Adeg tilt - perfect for power and sail boat applications Low-profile housing compensates for hull deadrise, does not affect hull performance and provides accurate readings at high speeds Designed with Airmar&';s exclusive Broadband Ceramic Technology, 235 kHz element improves resolution without sacrificing sensitivity Smart(TM) Sensor with embedded microelectronics - transducer element and signal processor are only millimeters apart 235 kHz frequency prevents mutual interference with other echo sounders on vessel Retractable housing with self-closing valve minimizes water flow into the vessel when transducer is removed for servicing Specifications: Mount: Thru-hull Fixed Element Tilt Angle: 20Adeg (for 16Adeg - 24Adeg hull deadrise) Housing Material: Plastic Connector: 5-pin NMEA 2000A(R) Cable Length: 20 ft. Frequency: 235 kHz Cone: 12Adeg Power: 100 Watts RMS Depth Sensor Range: 1.6 - 594 ft. Acoustic Window Material: Urethane Compatible Hull Materials: Fiberglass or metal Hole Diameter for Installation: 2" Dimensions: 4.92" H x 2.94" OD This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.