AIRMAR ST850 P17 Smart Speed and Temperature Sensor Thru-hull Plastic


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speed & temperature
€470.00 *

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Product Description and Technical Data

Product information "AIRMAR ST850 P17 Smart Speed and Temperature Sensor Thru-hull Plastic"

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 NMEA 2000® display or network. These low-profile units are nearly flush and minimize drag with only 5 mm (3/16 in.) 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 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 speed and temperature 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 standard.


  • Speed and temperature
  • Speed Range: 2 to 45 knots (2 to 52 MPH)
  • NMEA 2000 or analog output options
  • Retractable insert in a low-profile housing with a water valve
  • Available in a plastic (P17) or bronze (B17) housing with water valve
  • Retrofits into B617V, P617V, SS617V, P217, P314or ST650 housing
  • NMEA 2000 certified or analog cable


  • Weight:

                Plastic-0.7 kg (1.4 lb.)

                Bronze-1.3 kg (2.8 lb.)

  • Hull Material:

                Plastic housing-Fiberglass or metal hull

                Bronze housing-Fiberglass or wood hull

  • Speed Range: 2 to 45 knots (2 to 52 MPH)
  • Acoustic Window: Urethane
  • Hole Diameter: 51 mm or 2 in.
  • Data Update Rate: 1 per second
  • Pressure Rating: 3 m (10 ft.)
  • Pulse Rate: 17,000 p/nm* (4.8 Hz per knot)-*p/nm = pulses per nautical mile
  • Supply Voltage: 9 to 16 VDC
  • Supply Current: <200 mA
  • Standard Cable Length:
  • NMEA 2000-6 m (20 ft.)
  • Analog-9 m (30 ft.)
  • Temperature Sensor Accuracy: ±0.5°C (±1.8°F)
  • Temperature Sensor Range: -10° to 40°C (14° to 104°F)
  • NMEA 2000 Load Equivalency Number (LEN): 2
  • CE Regulation: Complies to IERC60945
  • Includes: Blanking plug

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