AIRMAR Technology: UST800/850 Ultrasonic Speed and Temperature Sensor

Ultrasonic Speed and Temperature Sensor from AIRMAR Technology
Ultrasonic Speed and Temperature Sensor from AIRMAR Technology AIRMAR Technology

Ultrasonic speed and temperature sensor provides maintenance-free reliability all season long. AIRMAR, the company who invented the Smart™ Sensor, has raised the bar with a new ultrasonic speed and temperature sensor. The UST800/850 calculates speed ultrasonically up to 22 times every second, automatically adapting update rates based on vessel speed. Because it’s ultrasonic, there is no paddlewheel, meaning trouble-free operation and no maintenance. With fast-response water temperature accuracy, the UST800/UST850 makes finding optimum swimming and fishing temperatures easy. This translates into the most reliable and precise ultrasonic speed/temp sensor on the market—at a very competitive price.

For use on powerboats and sailboats of all types and sizes with reliable operation in both salt and fresh water.


  • Speed Range: 0.1 to 50 knots (57 MPH)

Fast Response Water Temperature

  • Accuracy +0.5°C (+1.0°F)
  • Range -4°C to 40°C (24.8°F to 104°F)

Simple Installation and Easy Maintenance

  • Only one hole through the hull simplifies the installation
  • Retrofits into popular P617V and other housings
  • No paddlewheel to clean and maintain

Available Outputs

  • —NMEA 0183
  • —NMEA2000®




More Information

Website: AIRMAR

See the complete 2018 Marine Electronics Guide