Garmin GSD 20

The GSD 20 is a remote, black-box sounder that transmits 500 watts at 50/200kHz. It s designed for use with the GPSMAP(R) 3006C, GPSMAP(R) 3010C, GPSMAP(R) 2006/2006C, GPSMAP 2010/2010C, GPSMAP 182/182C and GPSMAP 232 to provide SONAR capabilities to these units. The sounder module sends data serially in a Garmin(R) proprietary format to up to two units on board. When viewed on Garmin chartplotters, you ll see full-featured sounder displays in either split- or full-screen presentations. Features include auto-ranging, 2X and 4X auto and manual zoom, optional fish symbols and See-Thru(R) technology, which separates fish from thermoclines and structure.

This product does not include a transducer. Warranty: 1 Year