AIRMAR Ultrasonic Smart UDST800 235 kHz Plastic NMEA 2000 Version Depth Speed and Temperature Sensor with Value|UDST800B-N2/N2K

AIRMAR UDST800B-N2, Ultrasonic TRIDUCER, Depth, Speed & Temp, NMEA2000 BRONZE, WITH VALVE

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Airmar’s new UDST800 just turned your maintenance time into more cruising time and made your boat smarter too. Ultrasonic speed, depth and temperature in one single housing with no moving parts makes this sensor a high precision, low maintenance solution for use on power and sail boats of all types and sizes. Say goodbye to paddlewheel maintenance and hello to Smart™ technology, from the company who invented the Smart™ Sensor.

Additional information

Item Name

Sensor with Valve






235 kHz

Voltage Rating

9 to 16 VDC

Connection Interface

NMEA 2000 Connector


Depth, Speed and Temperature


2.94 in Dia x 4.92 in L

Amperage Rating

125 mA at 12 VDC Average; 80 to 200 mA Supply

Temperature Rating

-4 to 40 deg C (32 to 104 deg F) Water Temperature

Correlation Pulse Repetition Frequency

0.5 to 12 kHz (Varies with Speed)

Correlation Speed Sensor Transmitting Frequency

4.5 MHz

Speed Rating

0.1 to 50 knots (0.1 MPH to 57 MPH)

Thru-Hull Housing Diameter

2 in


3 lb