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Enabling better global research outcomes in soil, plant & environmental monitoring.

AIO 2 Sonic Weather Sensor

The AIO 2 Sonic Weather Sensor is a complete, high performance weather sensor using Met One Instruments’ proven 2D sonic technology. This technology provides reference grade accuracy without moving parts and includes a built-in compass used for automatic magnetic north alignment of the wind sensor. The temperature and humidity elements are integrated into an IP65 sealed module with a quick disconnect for ease of calibration in the field. The pressure element is precisely calibrated, and temperature compensated for outstanding performance.

The AIO 2 will accept data from a tipping bucket rain gauge, a compatible solar radiation sensor, or both.

The AIO 2 is designed for surface meteorological applications where accuracy and reliability matter.


  • Wind Speed and Direction
  • Temperature
  • Humidity
  • Barometric Pressure
  • Rain and Solar Radiation Options
  • Rugged all metal housing
  • SDI12, RS232, RS485 Outputs
  • Met One 7500 Protocol
  • Compact 10cm Diameter
  • Compass for Automatic Direction Alignment
Accessory Options:
  • 10600 USB and power interface
  • WeatherView software for real time weather display and data recording on a PC
  • Universal mounting hardware
  • WMO compliant external tipping bucket rain gauge connects simply and allows for correct installation and siting per industry guidelines.
  • Solar radiation sensor and/or tipping bucket rain gauge is connected easily and integrate seamlessly into the AIO 2 data record.
Wind Speed
Operating Range: 0 to 75 m/sec (0 to 168 mph)
Calibrated Range: 0 to 60 m/sec (0 to 134 mph)
Accuracy: ±0.5 m/sec or 5% of reading (1)
Resolution: 0.1 m/sec
Sensor Type: Ultrasonic
Threshold: < 0.2 m/sec
Response Time: 1 second
Wind Direction
Range: 0° – 360°
Accuracy: ± 5° (including Compass)
Resolution: 1.0°
Sensor Type: Ultrasonic
Threshold: < 0.2 m/sec
Response Time: 1 second
Range: -40°C to +60°C
Accuracy: ±0.2°C (2)
Resolution: 0.1°C
Sensor Type: Resistance type
Response Time: 1 second
Relative Humidity
Range 0 to 100%
Accuracy ±3% (3)
Resolution: 1.0%
Sensor Type: Capacitive/Solid State
Response Time: 1 second
Range: 500 to 1100 hPa
Accuracy: ±0.5 hPa (3), ±0.3 Optional (across entire operating range)
Resolution: 0.1 hPa
Sensor Type: Piezoresistive silicon
Response Time: 1 second
Alignment Compass
Accuracy: ±2°
Measurement Rate Output: 1, 2, 5, 15, 30, 60 Hz (user selectable)
Signal Output: RS-232C, RS-485, SDI-12 (specify at time of order)
Power: 8-36 VDC supply, 40mA @ 12 VDC, option dependent
Operating Environment
Temperature: -40 to +60°C
Humidity: 0 to 100%


1. Whichever is greater. Accuracy valid from 0 – 60m/sec.
2. 0 to 60°C. ±0.5°C from -40°C to 0°C.
3. At 25°C

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