Speed and Temperature

The ST850 is a low-profile, retractable, thru-hull sensor that computes accurate speed and temperature data and sends it to any NMEA 2000^® network. These low-profile units are nearly flush, minimizing 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 being replaced with the blanking plug.

Airmar's Smart^™ Sensors have embedded microelectronics. The signals from the speed and temperature sensors are processed right inside the housing itself. All that is needed to receive data is a single cable into a compatible network or display. Available as an analog sensor or a digital Smart Sensor that can output in NMEA 0183 or NMEA 2000 protocol.

• Speed and fast-response water-temperature sensing
• Speed range: 2 to 45 knots (2 to 52 MPH)
• NMEA 2000 protocol
• Retractable insert in a low-profile housing with a water valve
• Available in a plastic (P17) or bronze (B17) housing
• Retrofits into B617V, P617V, SS617V, P217, P314, or ST650 housing
• NMEA 2000 certified cable

BrochureST850

InstallationD-17-422-01

InstallationD-17-435-01

WiringD-91-994