The XNT 9 20 T includes a built-in temperature sensor, a 20-foot cable, and all the necessary high-speed hardware to get up and running right away. Although this unit has the same hole pattern as some older-version transducers, it utilizes a new design that is more secure and less prone to kick up at the high force of waves, as well as having an improved running angle, and an optional lock-down screw to override the kick up. The Humminbird XNT 9 20 T transducer is specifically designed for use with Humminbird's; Matrix 10, 12, 15, 17, 20, 27, 67, 77c, 87c, 97, 717, 727, 737, 767, 777, 787, 323, 343, 363, 383, 141, 161, PMax10, PMax15, PMax20, PMax210, PMax215, PMax220, 917c, 931c, 937c, 957c, 997c, 515, 525, 535, 565,580, 585c, 595c, Piranha 2, Piranha 4, XP2000, and XP4000 sonar devices and fish finders. This transducer is backed by Humminbird's one-year limited warranty.