Humminbird XNT 9 QB 90 T Transom Mount Transducer: * To operate in conjunction with a compatible Humminbird sonar or fish finder system * QuadraBeam transducer that features 20, 60 and 90 degree cone angles operating on 200 kHz, 83 kHx and 455 kHz frequencies * Built-in temperature sensor * 20" cable * Optional lock-down screw to override the kick up * Specifically designed for use with Humminbird"s 300TX, 400TX, Wide Optic, Wide Portrait, Wide Panorama, Wide Paramount, FF575, Matrix 37, Matrix67, Matrix 87c. Matrix 97, 737, 767, 787c, 787c2i, 917c, 957c, 997c and PiranhaMax 240 sonar devices and fish finders * Material: plastic, rubber * Origin: USA