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Garmin Airmar ST850 Plastic Thru-Hull Speed/Temp Sensor

Item # 758723
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Ships within 5 - 6 business days

Additional Information:
  • This item can only be shipped to U.S. addresses.
  • Additional discounts do not apply.


  • Easily collects water and speed data

  • Sends data to your chartplotter or radar screen

  • Low-profile unit

  • Sensor fits any deadrise/transom angles

Product Summary 

Easily collect your vessel speed and the water temperature with the Garmin Airmar ST850 speed/temperature sensor. Digital signal processing inside the housing provides speed and temperature data to a chartplotter, radar screen, or digital display in either analog or NMEA 2000 formats. This low-profile unit is nearly flush with only 3/16" extending outside of the hull. Plastic thru-hull mount sensor uses a paddlewheel to determine vessel speed while the temperature sensor indicates the current water temperature. The 8-pin Airmar ST850 sensor works on compatible Garmin sounders. It fits any deadrise/transom angles.