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Simrad NSS12 evo3S Combo Multi-Function Chartplotter/Fishfinder - No HDMI Video Out Port
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Garmin
Garmin GT21-TH S/S Thru-Hull ClearVü & CHIRP, 600W 50/200kHz Traditional, 500W 260 & 455 ClearVü CHIRP
In StockNewSKU: 010-01962-10
$403.74$474.99per unit
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Quick Specs
Temperature: YesSpeed Included: NoPins: 8Imaging: Standard/DownCable Length (Feet): 30'Mounting Style: Thru-HullChirp: Non Traditional
Description
GT21-TH
Perfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearVü scanning sonar with a stainless steel stem, this thru-hull mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat.
The CHIRP ClearVü element has a power rating of 500 W and operating frequencies of 260/455 kHz. The traditional sonar has a power rating of 600 W and operating frequencies of 50/200 kHz. It includes a built-in fast-response temperature sensor. For hull deadrises less than 25 degrees.
GT21-TH includes an 8-pin transducer with stainless steel stem, fairing block, isolation plate and bushings, mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Quick Specs
Temperature = Yes | Speed Included = No | Pins = 8 | Imaging = Standard/Down | Cable Length (Feet) = 30' | Mounting Style = Thru-Hull | Chirp = Non Traditional
Accessories (20)
Specifications
| SKU | 010-01962-10 |
| UPC | 753759152833 |
| Brand | Garmin |
| Category | Marine Navigation & Instruments |
| Country of Origin | TAIWAN |
| Weight | 8.4 |
| Dimensions | 17 x 14 x 6 |
| Status | Active |
| Last Synced | 10/18/2026, 2:04:26 AM |
Compliance & Shipping
WARNINGProp 65 Notice
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Returnable
Product Literature
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Frequently Bought Together
Total for 4 items:
$2443.71
Compare Key Features
| Feature |  Garmin GT21-TH S/S Thru-Hull ClearVü & CHIRP, 600W 50/200kHz Traditional, 500W 260 & 455 ClearVü CHIRP CURRENT |  Garmin LiveScope™ 2 HD Transducer - LVS42HD |  Garmin Dual Beam-IF Ice Transducer |  Garmin GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz) Traditional 500W (77/200 Hz) Transducer w/Temp - 4-Pin |  Garmin GT52HW-TM Plastic, TM or Trolling Motor Transducer, High Wide CHIRP/DownVü/SideVü - 455/800kHz, 500W |
|---|---|---|---|---|---|
| Price | $403.74 | $1869.99 | $84.99 | $84.99 | $297.49 |
| Brand | Garmin | Garmin | Garmin | Garmin | Garmin |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 8.4 | 7 | 0.9 | 1.47 | 2.11 |
| Dimensions | 17 x 14 x 6 | 11 x 9 x 7 | 7 x 6 x 3 | 8 x 7 x 3 | 10 x 7 x 3 |
| SKU | 010-01962-10 | 010-03899-00 | 010-13069-00 | 010-01960-00 | 010-12405-00 |
| Country | TAIWAN | TAIWAN | TAIWAN | TAIWAN | TAIWAN |
| View Item | View Item | View Item | View Item | View Item |
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$403.74