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UDST820 TriSonic Plastic Thru-Hull Transducer - N2K
TriSonic Smart Sensor combines a depth sensor, ultrasonic speed sensor, water temperature, and heel and trim data into one sensor. It delivers unmatched reliability and accuracy without the need for paddlewheel maintenance. Its ultrasonic speed solution features no moving parts, eliminating cleaning or wear concerns, making it a high-precision, low-maintenance option for power and sailboats of all sizes. The TriSonic Smart Sensor, along with the CAST™ app, simplifies the calibration of speed-through-water. The Airmar CAST™ App connects directly from iOS and Android™ Smart devices to Airmar’s Bluetooth® enabled TriSonic Smart™ sensors and makes configuration simple with intuitive menus and guided calibration. View data from the sensor in digital or graphical format, quickly turn on or off NMEA 2000® PGNs, configure offsets and more.
CAST App for Speed and Depth Calibration:
The CAST app provides a simple and consistent way of calibrating speed and depth. Simple offsets can be applied to compensate for the depth below keel or depth from surface. Calibrations and configuration changes are stored in the Airmar Smart Multisensor and delivered to the NMEA2000® network. CAST provides a consistent and reliable way to calibrate basic and heel-compensated speed-through-water with a step-by-step guided process. For advanced speed-through-water calibration, CAST allows you to manually enter custom speed data for up to four heel angles and up to ten speeds. Before CAST, this feature was only available on the market through expensive PC software.
Embrace Ultrasonic Smart technology and leave paddlewheel maintenance behind, brought to you by the innovators of the Smart™ Sensor.
TriSonic Smart Sensor Combines:
- Ultrasonic speed (no paddlewheel)
- Depth
- Water temperature
- Heel and trim data
Features:
- No paddlewheel or moving parts to maintain or replace.
- Provides NMEA 2000® output of calibrated data to every instrument and MFD on the network.
- Advanced speed filtering and sampling rates for enhanced accuracy at all speeds, with data updating up to 5 times per second.
- Patented Adaptive Signal Processing – adjusts to boat speed, water depth, and water clarity for consistent speed accuracy.
- Suitable for both saltwater and freshwater use.
- Easily retrofits into most existing AIRMAR 2" housings.
Connects wirelessly to Airmar’s CAST app, offering user-friendly benefits:
- Simplifies speed calibration through your mobile device.
- Offers basic and advanced speed calibration with the ability to manually enter speeds for multiple heel angles and up to 10 different speeds, a feature previously available only through costly PC software
Specifications:
- Bluetooth Capable: YES Bluetooth BLE
- Cable-Length: 6 m (20') NMEA 2000® cable, 6 m (20')
- Comm Method: NMEA 2000®
- Common Use: Cruising/Racing Sailboats, Leisure/Yachting
- Country of Origin: USA
- Data Rate: Up to 10 times per second
- Depth Range: Minimum Depth .6 m ( 2'), Maximum Depth 100 m (328')
- Display Connector: N2 Micro
- Frequency Band: 235 kHz
- Functions: Depth, Speed, Temperature, Attitude
- Hole Size: 51 mm (2")
- Hull Material: Fiberglass or metal
- Material: Plastic
- Max Depth: 0.6 m (2') to 100 m (330')
- Mounting Style: Low Profile Thru-Hull
- NMEA 2000 LEN: 6
- Power Rating: 100 W
- Power Supply Current: 80 mA - 200 mA, Average 125 mA @12VDC
- Retract Method: Manual
- Retractable housing: Yes
- Retrofits: Fits most Airmar 2" housings
- Speed Range: 0.1 to 35 knots (40 MPH)
- Temperature Accuracy: +0.5°C (+1.0°F)
- Tilted Element: No
- Usable Shaft Length: 57 mm (2.25")
- Voltage: 9 to 16 VDC
- Water Temperature: -4° to 40°C (24.8° to 104°F)
- Weight: 1.4 kg (3 lb.)
- Wireless Range: Up to 30' depending on mount location
FAQs
Product & Usage
1. Is your gear authentic and warranty-backed?
Yes — we are an authorized US dealer for 300+ marine electronics brands. Every order ships with the manufacturer’s full warranty.
2. Are these products beginner-friendly?
Yes. Our products are designed for both seasoned boaters and first-time owners. Each unit ships with a manufacturer manual, and we’re happy to answer setup questions over email.
3. Are these products built for marine conditions?
Yes. Marine electronics are engineered for saltwater spray, vibration, and weather. Check the product specs for IPX waterproof rating and saltwater certifications.
Maintenance & Accessories
1. What maintenance does marine electronics require?
Rinse with fresh water after saltwater exposure, store in a dry place, and follow your manufacturer’s cleaning and storage instructions.
2. Can I buy replacement parts and accessories separately?
Yes — we carry replacement parts, mounts, transducers, cables, and accessories for the brands we stock.
3. Do you provide product manuals or installation guides?
Every product ships with the original manufacturer’s manual. Digital copies and detailed installation guides are typically available on the brand’s website.
Warranty & Guarantee
1. Does my purchase include a warranty?
Yes — every order includes the full manufacturer warranty. Coverage length varies by brand (typically 1–3 years for Garmin, Lowrance, Raymarine, Simrad, Humminbird, Furuno, and others).
2. How do I register for warranty coverage?
Register directly with the manufacturer using your unit’s serial number. Manufacturer registration is the fastest path to warranty support if you ever need it.
3. What does the manufacturer warranty cover?
Defects in materials and workmanship under normal use. Damage from impact, improper installation, or saltwater corrosion (without protection) may be excluded. Check brand-specific terms in your unit’s documentation.
4. Can I extend the warranty?
Some manufacturers offer extended-coverage programs through their registration portals. We don’t sell third-party warranty programs.
Purchasing & Support
1. How fast does my order ship?
Orders placed before 4pm EST Monday–Friday ship the same business day via UPS from our NJ or FL warehouses. Continental US delivery typically takes 3–7 business days for Economy.
2. Do you offer bulk or fleet pricing?
Yes — we offer volume pricing for fleet operators, marinas, dealers, and commercial customers. Email support@marineelectronicsdepot.com with your needs.
3. How can I contact support?
Email support@marineelectronicsdepot.com or call during business hours (Mon–Fri 9am–5pm ET). We’re happy to help with pre-purchase questions, order status, or post-sale support.
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