Airmar Transducers

Airmar ST300 Shortie Speed Transducer w/Spade Connectors for Raymarine

Brand: Airmar
Part Number: ST300-FISO

The ST300 speed and temperature sensors are Airmar’s shortest thru-hull speed sensors. As part of Airmar’s Shorty™ Series, they are designed for boats with low headroom. The low-profile outer housing is nearly flush and minimizes drag with only 5 mm (3/16”) extending outside the hull.


  • Speed and Temperature
  • Shorty series designed for fiberglass hulls with low headroom
  • Designed for use with all fiberglass and metal sailboats and powerboats
  • Right angle cable exit offers low headroom and protection when transducer is stepped on
  • Self-closing sea valve reduces waterflow when paddlewheel is removed for cleaning
  • Fins on sides of paddlewheel cavity provide improved accuracy in cross-fl ow conditions
  • Available in a plastic housing only
  • Usable Shaft Length: ~28 mm (1.12”)
  • Supply Voltage: 5 VDC to 25 VDC
  • Speed Range: 2 to 45 knots (2 to 52 MPH)