Airmar ST850 Transducer Plastic Housing with 10m Cable

Airmar 31-590-1-41 ST850 P17 Speed & Temperature Sensor – No Connector

The ST850 is a low-profile, retractable, thru-hull sensor that computes accurate speed and temperature data and sends it to any NMEA 0183 or NMEA2000® display or network. These low-profile units are nearly flush and minimize drag with only 5 mm (3/16″) extending outside of the hull. The housing features a water valve which minimizes water ingress into the boat when the retractable insert is temporarily out for cleaning.