Designed for Raymarine Multifunction Displays, the DSM30 Digital Sounder Module offers Raymarine's patented HD digital fishfinder technology in a sounder with 600-watt (RMS) output power and intended for 12V DC power systems. The Raymarine DSM30 HD Digital Receiver provides auto-adaptive control of sensitivity, ping rate, and transmit power, optimizing the fishfinder's performance for the prevailing water depth and sea conditions. HD digital surpasses traditional analog fishfinders by offering infinite receiver bandwidth, enabling the fishfinder to see all of the returning echoes. High-speed digital signal processing then analyzes, correlates, and presents them in the optimum manner. This provides a fishfinder display virtually free of clutter and noise, with super-detailed contacts and a lifelike bottom contour. Best of all, total "hands off" operation means there's no need to tweak and tune the controls because the Raymarine DSM30 processor handles it for you. The Raymarine DSM30 comes with power cable and mounting hardware. 50/200 kHz. Measures 10.8"W x 7.4"L x 2.5"H. Transducer sold separately.