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*Connect with CANet™
This black-box sounder connects directly to your chartplotter with a serial cable. To take advantage of UltraScroll™, which provides lightning-fast refresh rates, connect the GSD 21 to your chartplotter with CANet, Garmin's 1-megabit proprietary network.
*Get Great Shallow and Deep-Water Performance
The high-dynamic range sounder provides exceptional performance in water as shallow as one foot to depths as great as 1,500 feet. The GSD 21 can connect to dual-frequency transducer (50/200 kHz) for deep-water performance and 500 watts of transmit power, or a dual-beamwidth transducer (narrow/wide) for operation in shallow freshwater as well as deep water and a transmit power of 400 watts.
What's in the Box:
*GSD 21
*CANet cable
*Power/data cable
*Installation instructions
| Details |
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| Weight | 5.00 lbs | | Market price: |
$ 266.99
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| Price: |
$ 299.95 |
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