Using the cable provided in the manual, the smartphone becomes a heading-up sensor for the fishfinder, which can be used with fishfinders capable of NMEA0183 input.
It is set to a baud rate of 4800.
Please read instructions carefully before purchasing.
Operation has been tested with garmin gpsmap923xsv.
https://andro.io/app/heading4800
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FishFinderHeadingUP4800 for Android – Latest Version & Features
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