GARMIN GSD 21 Analog Sonar

20 ft. Extension cable for transducers, with ID 6-pin

10 ft. Extension cable for transducers, ID

NMEA 2000 Transducer Adapter Kit

Speed Sensor

B744V-6G DTS 50 200 khz 600 w Bronze Thru Hull Transducer

B22 12 tilt 200KHZ Bronze Transducer

P72-8G 500W 77/200 kHz Transducer

SS164 0 deg tilt 1kW Transducer 8pin

SS164 12 deg tilt 1kW Transducer 8 pin

SS164 20 deg tilt 1kW Transducer 8 pin
Contents of the package
- GSD 21
- CANet cable
- Power/data cable
- Installation instructions
Please note: This product does not include a transducer. We offers a complete selection of transducers that you can purchase separately as accessories.
Features
Use a serial cable to connect this black-box sounder directly to your chartplotter
for a superb sonar experience. Once you connect your GSD 21 to your chartplotter with
CANnet, Garmin’s 1 MB proprietary network, you can use UltraScroll to provide
ultra-fast refresh rates.
The GSD 21 is a high-dynamic range sounder that performs exceptionally up to 1,500
feet. You can connect it to a dual-frequency transducer (50/200 kHz) for amazing
deep-water performance, and 500 watts of transmit power, or connect it to a
dual-beamwidth transducer for use in both shallow freshwater and deep water, along
with a transmit power of 400 watts.
Specifications
Item number: 010-00502-00
UPC: 753759052232
Package weight: 5 lb
Other Products in the Series:
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![]() | GARMIN GSD 20 Remote Sounder NOH | |
![]() | GARMIN GSD 21 Analog Sonar NOH | |
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List of Compatible Units:
Note: Displayed are products sold in gps4us store.
There might be more GPS units compatible with chosen accessory.