The Humminbird Transom Transducer DualBeam Down Imaging 200/455 XNT 9 DI T supports Down Imaging/DualBeam Plus, 75/45; 455/800 kHz (DI) and 25/16; 200/455 kHz, with built-in temperature.FeaturesCompatible with: 1159ci HD DI, 959ci HD DI, 859ci HD...