Speed sensor ST950
water temperaturefor boatthrough-hull

speed sensor
speed sensor
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Measured value
water temperature, speed
Application domain
for boat
Other characteristics
through-hull, NMEA 2000®, NMEA 0183®
Power supply

Max.: 16 V

Min.: 9 V

Overall length

75 mm (3 in)

Overall width

75 mm (3 in)

Overall height

119 mm (5 in)


Speed performance has been taken to the next level with the introduction of the ST950 Speed/Temperature sensor. Featuring the new Gen2 Paddlewheel, the ST950 out-performs all other paddlewheel sensors for responsive startup and linearity. The Gen2 Paddlewheel begins delivering accurate speed reporting as low as 0.3 knots and maintains smooth speed output through 45 knots. The plastic, bronze, and stainless-steel outer housing options are compatible with all hull types. These low-profile housings are nearly flush and minimize drag with only 5 mm (3/16") extending outside the hull. The housing has a valve assembly that helps to minimize water ingress in the bilge when the sensor is removed for routine maintenance of the paddlewheel. Features Speed and fast-response water-temperature Best-in-class speed range from 0.3 to 45 knots (.34 to 52 MPH/.55 to 83 KPH) Analog output Retractable insert in a low-profile plastic, bronze or stainless-steel housing with a water valve ST950—Retrofits into Airmar P17 and B17 housings Specifications Weight: - Plastic: 0.7 kg (1.4 lb.) - Bronze: 1.3 kg (2.8 lb.) - Stainless Steel: 1.6 kg (3.5 lb.) Hull Material: Compatible with all hull materials Hole Diameter: 51 mm or 2" Speed Range: 0.3 to 45 knots (.34 to 52 MPH/.55 to 83 KPH) Pulse Rate: 5.7 Hz per knot Water Temperature: - Range: -10° to 40°C (14° to 104°F) - Accuracy: ±0.5°C (±1.8°F) Pressure Rating: 3 m (10') Power: - Supply Voltage: 9 to 16 VDC - Supply Current: <200 mA Standard Cable Length: 9 m (30') Includes: Blanking plug Certifications and Standards: Complies to IERC60945


Meet this supplier at the following exhibition(s):

International WorkBoat Show 2023
International WorkBoat Show 2023

29 Nov - 01 Dec 2023 New Orleans (USA - Louisiana) Stand 3505

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    Other Airmar products


    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.