Airmar NMEA0183 RS422 & NMEA2000 CANBUS Weatherstation, RS422, NO RH, IPX7

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)

Brand: Airmar Technology

Air Temp Accuracy: ±1.1°C at 20°C

Air Temp Range: -40 to 80°C (-40 to 176°F)

Air Temp Resolution: 0.1°C

Barometric Pressure Accuracy: ±1 hPa at 25°C

Barometric Pressure Range: 300 to 1100 hPa

Barometric Pressure Resolution: 0.1 hPa

Certs 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, CAN

Communications Available Protocol: Serial - NMEA 0183, CAN NMEA 2000, J1939, ISOBUS

Communications Serial Data Transmission Code: ASCII

Communications Serial Output Rate: 1 Hz typical. User selectable. 10 Hz maximum recommended

Display Connector: Cable Required

Exterior Color: White

GNSS Position Accuracy: 2.5 m (8’) CEP ‡

Humidity: Optional, Not Available

Note: Cables sold separately unless otherwise specified

Operating Temp Range: -25 to 55°C (-13 to 131°F)

Pitch Roll Accuracy: ±1° in range of ±30°

Pitch Roll Measurement Type: MEMS