Piranhamax Sonar Technology - Humminbird PiranhaMAX 155 Installation And Operation Manual

PiranhaMAX Sonar Technology

The PiranhaMAX is the easiest to use fishfinder ever. For most anglers, all you'll
ever need to do is power on and fish! The PiranhaMAX automatically
determines depth and makes adjustments to keep the bottom and fish visible
on the display.
The PiranhaMAX uses sonar technology to send sound waves from the
transducer into the water. The returned "echoes" are plotted on the display,
creating a very accurate picture of the underwater world, including distance
to underwater objects such as the bottom, fish, and structure.
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PiranhaMAX Sonar Technology