Raymarine DSM300 Digital Sounder Module

Features 600 or 1000 Watt operation depending on choice of transducer Dual frequency 50/200 kHz Patented Raymarine HD Digital sounder technology E-Series SeaTalk hs network integration (optional SeaTalk hs crossover coupler or SeaTalk hs Network Switch is required) C-Series Integration: hsb2 networking compatible with "Plus" series radars, chartplotters and fishfinders HD Digital Auto Adaptive Gain control (no adjustment required) Patent Pending Digitally Adaptive Transmitter Receiver with infinite receiver bandwidth settings and digital filter A-Scope (Real-Time Display): Split second real time representation of fish and bottom features passing through the beam of your transducer right now, the history of your A-Scope is represented in the standard sounder image scrolling across your screen Zoom Display: Auto or manual zoom magnification of any part of the 200 or 50 kHz fishfinder screen image, (X 2, X4 or X6 magnification) Bottom Lock: bottom lock feature, shows the bottom as a straight line, in order to help you detect fish close to the bottom and remove wave action from the fishfinder image White Line: White line feature helps distinguish between fish and the bottom, when fish are swimming close to the bottom