The easy-to-install, networkable GCV 20 sonar black box allows you to redefine clarity and detail. Add any of the 3 GT34UHD transducer models to see stunningly clear Ultra High-Definition ClearVü and Ultra High-Definition SideVü scanning sonars -with frequencies ranging from 0.8 MHz (800 kHz) to 1.2 MHz (1,200 kHz) -to your compatible chart plotter. And you can share sonar images seamlessly across multiple networked chart plotters as well as networking Panoptix all-seeing sonar. It includes a max power output of 500 watts.