Smart Sensor Comparison

Your Speed Sensor. Your Boating Style. Find Your Perfect Match

TriSonic™ Smart™ Sensor and DST820 Smart™ Sensor deliver the same essential boat data using two different technologies. Compare their speed technology, advantages, and capabilities to find your best fit.

Either way, you’re getting AIRMAR quality.

What They Share

4 Measurements Depth, speed-through-water, water temp, and heel & trim

5× Speed updates per second

Bluetooth^® Connectivity extending up to 30' across the boat

CAST™ App Basic & advanced speed calibration and offset adjustments from your phone

NMEA 2000^® Network output

The Main Difference

Choose the speed technology that fits your boat.

Best for low maintenance

TriSonic Smart Sensor

Choose TriSonic if eliminating paddlewheel maintenance is important to you.

Ultrasonic speed with no paddlewheel to clean or replace
Best choice if you boat in fertile waters where fouling is an issue
Adaptive Signal Processing adjusts to speed, depth, and water clarity
Designed for use in both saltwater and freshwater

View TriSonic Smart Sensor

Best for LOW SPEED ACCURACY

DST820 Smart Sensor

Choose DST820 if you want great speed accuracy, even at lower speeds.

Best-in-Class Gen2 paddlewheel is the most responsive for low speeds, like when tacking
Speed range from 0.3 knot through 45 knots
Plastic, bronze, and stainless-steel housing options

View DST820

Still not sure which one to choose?

An AIRMAR Certified Installer can help confirm housing compatibility, installation requirements, and the best speed technology for your boat.

Find an AIRMAR Certified Installer