This Humminbird Trolling Motor Mount Transducer is an essential tool for dedicated and passionate anglers. The tool determines depth of water and aids in locating fish by sending and receiving signals under the boat. It has a low-profile design to minimize snags on weeds as well as a built in temperature gauge. The XTM 9 DI 25 T Humminbird Trolling Motor Mount Transducer includes Down Imaging/DualBeam Plus, a 15-foot cable and all necessary hardware. It has a beam angle of 75-45 degree when used at a frequency of 455/800kHz (DI) and a beam angle of 25-16 degree when used at a frequency of 200/455kHz. This Humminbird trolling motor transducer is compatible with various models of trolling motors.