300WX-IP67 WeatherStation® Instrument- No Relative Humidity
Part Number300WX-IP67

Extreme-Duty Confidence for Marine & Autonomous Systems
When equipment lives offshore, on deck, or in dusty environments, exposure is constant and failure is expensive.
The 300WX-IP67 delivers the same next-generation intelligence as the 300WX, but in a fully sealed, IP67-rated housing engineered for continuous exposure to water, dust, vibration, and harsh marine conditions.
This is the model trusted for offshore platforms, buoys, unmanned surface vehicles, commercial workboats, and long-duration autonomous deployments. It’s designed not just to perform — but to endure.
True Wind. True Awareness. Even at Sea.
On moving vessels, apparent wind alone is misleading. The 300WX-IP67 continuously calculates Dynamic True wind by integrating GNSS speed data with stabilized heading and motion data to cancel out apparent wind and deliver the True wind speed and direction. That clarity improves navigation decisions, supports autonomous control systems, and enhances vessel performance optimization.
Built for Harsh Reality
The IP67 enclosure protects against water and dust intrusion, while the proven, rugged housing durability enhances long-term reliability in exposed environments. The 300WX-IP67 removes worry from the equation. It simply continues working — through spray, salt, vibration, and long deployments.
Seamless Connectivity Without Complexity
Like its counterpart, the IP67 model integrates easily into marine and industrial networks, including NMEA 2000®, NMEA 0183, J1939, and ISOBUS systems. Bluetooth** connectivity with Airmar's CAST™ enables remote configuration and firmware updates without removing it from its installed location — especially valuable for mast-mounted or difficult-to-access installations.
**Non-Bluetooth models are available upon request. Visit our How-to-Buy page to make contact with our sales offices.

- Ultrasonic measurement of apparent and Dynamic true wind speed and direction
- Barometric pressure
- Air temperature and wind chill
- Calculated dew point and heat index
- GNSS position, speed over ground, and course over ground
- Three-axis, solid-state compass with dynamic stabilization
- Three-axis rate gyro supplies rate-of–turn data
- Three-axis accelerometer for best-in-class pitch and roll information
- Housing IP67 rated for dust/water-ingress protection
- Data output via a single cable (various lengths available)
- NMEA 0183/ASCII serial data protocol over RS-232 interface
- NMEA 2000 protocol over CAN
- J1939
- ISOBUS
New Features of the 300WX WeatherStation Instruments:
- Enhanced wind speed accuracy: 1.5 knots RMS at 20 knots
- Bluetooth® wireless connectivity for use with Airmar’s CAST™ app to view data, configure sensors, and perform firmware updates
- Added communication protocols: J1939 and ISOBUS
- Automatic baud rate detection for J1939 and ISOBUS (250 kbps / 500 kbps)
- Recommended Use: Marine Mobile or StationaryHumidity: Not AvailablePower Supply Voltage: 9 to 40 VDCPower Supply Current: <75 mA (<0.9 W) at 12 VDCCommunications Available Protocol: Serial - NMEA 0183, CAN NMEA 2000, J1939, ISOBUSWaterproof Rating: IP67Air Temp Accuracy: ±1.1°C at 20°CAir Temp Range: -40 to 80°C (-40 to 176°F)Air Temp Resolution: 0.1°CApparent Wind Speed and Angle: YesBarometric Pressure Accuracy: ±1 hPa at 25°CBarometric Pressure Range: 300 to 1100 hPaBarometric Pressure Resolution: 0.1 hPaCerts And Standards: CE, RoHS, IEC61000-4-2, IEC60945, IEC60950_1C, IEC60950_22A, EN55022, EN55024, EN14982; Ingress Protection, IP66 (IP64 with optional Relative Humidity sensor)Communications Available Hardware Interface: Serial RS232, Serial RS422, CANCommunications Serial Data Transmission Code: ASCIICommunications Serial Output Rate: 1 Hz typical. User selectable. 10 Hz maximum recommendedGNSS Position Accuracy: 2.5 m (8’) CEP ‡Mobile: YesMounting Thread: Standard 1”-14 UNS (3/4” NPT optional)NMEA 2000 LEN: 2Note: Cables sold separately unless otherwise specifiedOperating Temp Range: -25 to 55°C (-13 to 131°F)Pitch Roll Accuracy: ±1° in range of ±30°Pitch Roll Measurement Type: MEMSPitch Roll Range: 50°Pitch Roll Resolution: 0.1°Stationary: YesTheoretical Wind Speed and Direction: YesThree Axis Compass Dynamic Heading Accuracy: 2° dynamic heading accuracyThree Axis Compass Range: 0 to 359.9°Three Axis Compass Resolution: 0.1°Three Axis Compass Static Heading Accuracy: 1° static heading accuracyTrue Wind Speed and Direction: YesWeight: 300 g (0.7 lb.)Wind Direction Accuracy: 2.5° RMS @ 20 knotsWind Direction Calculations: User configurable dampingWind Direction Range: 0° to 359.9°Wind Direction Resolution: 0.1°Wind Speed Accuracy: 1.5 knots RMS @ 20 knotsWind Speed Calculations: User configurable dampingWind Speed Range: 0 to 40 m/s (0 to 89 MPH)Wind Speed Resolution: 0.1 m/sWireless Connectivity to CAST App: Yes

