Garmin GSD 20 Remote Sonar Sensor

Garmin GSD21 Fishfinder Remote Sonar Sensor Sounder Instrument GSD 20 21

Garmin Dual Frequency Transducer 50-200Khz for GSD 21, 22, GPSMAP 010-10272-00

Garmin GPSMAP Depth Transducer f/ Fishfinder Sonar Sounder Instrument GSD 20 21

GARMIN GSD 20 REMOTE SONAR SENSOR - SOUNDER MODULE

Garmin GSD 22 Digital Remote Sounder 50/200 kHz Network Sonar Module w Pwr Cable

Garmin GPSMAP Depth Transducer f/ Fishfinder Sonar Sounder Instrument Chartplott