Transom transducers mount on the transom of the boat in contact with the surface of the water. Many models incorporate an impact release feature that allows the transducer to pivot up and out of the way if struck by an object. 20ft cable and hardware included. This model will work with Matrix 10, 15, 17, 20, 25, 27, 55, 65, 67, 77c, 87c, 97; Piranha 1**, 2**, 3*, 4*, 5*; PiranhaMAX 210*, 215*, 220*, 230pt*; Fishfinder 515, 525, 535, 565, 580, 585c, 595c; 931c, 937c; 323, 343c, 363, 383c; 717, 727, 747c, 757c, 767, 777c, 787c; 917c.

·                     New design is more secure, less prone to kick up, with improved running angle

·                     Includes 20-foot cable, necessary mounting hardware, and built-in temperature sensor

·                     20- and 60-degree cone angles operating on 200 kHz and 83 kHz frequencies

·                     Compatible with many Pmax, Matrix and numbered series Humminbird sonar systems

·                     Backed by manufacturer's one-year limited warranty