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Airmar ST850 Smart Speed/Temp Transducer

Airmar Transducers

Airmar ST850/ST800 Smart Speed/Temp Transducer

Airmar's ST800 and ST850 Smart™ Sensors feature embedded micro-electronics. Speed and temperature signals are processed inside the sensor and can be displayed on any radar, chart plotter, or device that accepts NMEA 2000® data.

The ST850 is Airmar's standard, thru-hull, speed and temperature sensor. The plastic, bronze, and stainless steel outer housing options are available to meet all hull requirements. These low-profile housings are nearly flush and minimize drag with only 5 mm (3/16”) extending outside the hull.

  • Speed and temperature

  • Retractable plastic, bronze, or stainless steel housings with valve sleeve

  • ST800—Retrofits into Airmar P120 and B120 housings

  • ST850—Retrofits into Airmar P17 and B17 housings

  • 6 m (20') NMEA 2000 cable w/ Devicenet connector

  • Speed Range: 2 knots to 45 knots (2 MPH to 52 MPH)

Part No. Description (Click for more information) Price Buy Now
airST850PVN2 Airmar ST850 NMEA 2000 Plastic TH Speed/Temp $228.12 Add to cart
airST850BVN2 Airmar ST850 NMEA 2000 Bronze TH Speed/Temp $296.88 Add to cart
airST850SVN2 Airmar ST850 NMEA 2000 Stainless TH Speed/Temp $377.00 Add to cart
airST800PVN2 Airmar ST800 NMEA 2000 Plastic TH Speed/Temp $218.75 Add to cart
airST800BVN2 Airmar ST800 NMEA 2000 Bronze TH Speed/Temp $289.20 Add to cart

NMEA 2000® Supported PGNs
59392 ......... ISO Acknowledgement
600928 ....... ISO Address Claim
126208 ....... Acknowledge Group Function
126464 ....... Transmit PGN List Group Function
126464 ....... Received PGN List Group Function
126996 ....... Product Information
128259 ....... Speed (Speed Water Reference)
128275 ....... Distance Log
130310 ....... Environmental Parameters (Water Temperature)
130311 ....... Environmental Parameters (Water Temperature)
130312 ....... Environmental Parameters (Water Temperature)

Weight:—0.7 kg (1.4 lb)—Plastic—1.3 kg (2.8 lb)—Bronze—1.6 kg (3.5 lb)—Stainless Steel
Speed Range: 2 knots to 45 knots (2 MPH to 52 MPH)
Acoustic Window: Urethane
Hull Deadrise: Up to 22°
Data Update Rate: 1 per second
Pressure Rating: 3 m (10')
Pulse Rate: 20,000 p/nm* (5.6 Hz per knot)—*p/nm = pulses per nautical mile
Supply Voltage: 9 VDC to 16 VDC
Supply Current: <100 mA
Standard Cable Length: 6 m (20') NMEA 2000 cable
Temperature Sensor Accuracy: ±0.5°C (±1.8°F)
Temperature Sensor Range: -10°C to 40°C (14°F to 104°F)
NMEA 2000® Load Equivalency Number (LEN): 2
CE Regulation: Complies to IERC945


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P2 Marine, LLC
306 South Lake Drive
Stevensville, MD 21666