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.

Speed & Temp Thru-Hull NMEA2000 - Plastic

Low-profile through-hull speed/temp sensor for NMEA 2000 networks

The ST850 is sold with plastic housing only. Bronze and stainless steel housings are available for separate purchase.

Specifications:

• Type: NMEA 2000 network transducer
• Mounting: Low-profile through-hull
• Housing: Urethane
• Hull Aperture: 2" (51mm)
• Usable Shaft Length: 2.25" (57mm)

• 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