HUMMINBIRD FISHFINDER SWITCH 720014-1. Fishfinder SwitchThe Fishfinder Switch connects two fishfinders to one transducer.Description: Unit switch allows you to operate two fish finders on one transducer.For Use With: All Matrix (except Matrix 47 3D)- 700 Series- 500 Series- 300 Series- 100 Series- 900 Series (except 947c and 967c)- Wide Series (except One- 100- 128- 3D View- 3D Vision- 3D Vista) 300TX- 400TX- all Piranha- all PiranhaMax and HDR610 Product : HUMMINBIRD US2-W TRANSDUCER SWITCH 2 UNITS 1 TRANSDUCER Manufacturer : HUMMINBIRD PARTS Manufacturer Part No : 720014-1 UPC : 082324503733