This Humminbird Trolling Motor Mount Transducer has a low profile design to minimize snags. It includes Down Imaging/Dual Beam Plus, a 15-foot cable and all necessary hardware. Humminbird Trolling Motor Mount Transducer XTM 9 WIDE DI 20 T:. Low profile design to minimize snags. Down Imaging/Dual Beam Plus. 75 degree/45 degree, 455/800 kHz (DI). 25 degree/16 degree, 200/455 kHz. Built in temperature. Best used with: 1100 Series: 1158c DI Combo, 900 Series: 958c DI combo, 800 Series: 858c DI combo.