Designed for security, especially in high-force waves, the Humminbird XNT 9 20 T Transom Transducer is a Single/Dual Beam, 20°/60° transom-mount transducer for your boat's sonar system. It features a great running angle and an optional lockdown screw to override the kickup. Built-in temperature sensor. 200/83 kHz. Includes a 20' cable.