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Ultrasonic 9-in-1 RS485 Weather Sensor

SKU: SEN0658

The 9-in-1 Meteorological Monitoring Sensor is a compact integrated device measuring 9 parameters: ultrasonic wind speed/direction, air temp, relative humidity, atmospheric pressure, light intensity, noise, PM2.5, PM10. Its ultrasonic wind sensor (4 probes) has built-in error recognition for low discrete errors in strong winds, no moving parts/calibration, accurate data. The ABS shell is UV-resistant/waterproof, adapting to harsh outdoors. It uses RS485 + Modbus-RTU. DFRobot offers LoRaWAN/Arduino tutorials, cloud remote monitoring. Ideal for meteorological observation, agricultural greenhouses, etc.

Overview of Ultrasonic 7-in-1 RS485 Weather Sensor for Arduino

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Details
    Power supply voltage DC10~30V
    Working current 50mA
    Output mode RS485
    Measurement elements ultrasonic wind speed and direction, temperature, humidity, atmospheric pressure, light, noise, PM2.5, PM10
    Measurement range - Wind speed: 0~40m/s, start wind speed 0.5m/s
    - Wind direction: 0~359°
    - Humidity: 0~99%RH
    - Temperature: -40°C~80°C
    - Atmospheric pressure: 0~120kPa
    - Light: 0~200000Lux
    - Noise: 30~120dB
    - PM2.5: 0~1000ug/m³
    - PM10: 0~1000ug/m³
    Measurement accuracy - Wind speed: ±0.5+2%FS (60%RH, 25℃)
    - Wind direction: ±3° (60%RH, 25℃)
    - Humidity: ±3%RH (60%RH, 25℃)
    - Temperature: ±0.5℃ (25℃)
    - Atmospheric pressure: ±0.15kPa (101kPa, 25°C)
    - Light: ±7% (25℃)
    - Noise: ±0.5dB (at reference pitch, 94dB@1kHz)
    - PM2.5: particle counting efficiency: 50%@0.3μm, 98%@≥0.5μm, accuracy ±3%FS (@100μg/m3, 25℃, 50%RH)
    Response time - Wind speed: 1s
    - Wind direction: 1s
    - Humidity: ≤1s
    - Temperature: ≤1s
    - Atmospheric pressure: ≤2s
    - Light: ≤2s
    - Noise: ≤1s
    - PM2.5: ≤90s
    - PM10: ≤90s
    Long-term stability - Humidity: ≤1%
    - Temperature: ≤0.1℃
    - Atmospheric pressure: -0.1kPa
    - Light: ≤5%
    - Noise: ≤3dB
    - PM2.5: ≤1%
    - PM10: ≤1%
    Protection level IP54
    Housing material ABS polymer plastic
    Sensor cable length 14cm
    Adapter cable length 150cm

    Pinout

    Num Label Description
    Brown line VCC Power input positive pole, DC10-30V power supply
    Black line GND Power ground wire
    Yellow line 485-A RS485 data line A
    Blue line 485-B RS485 data line B

    FAQ

    • Any troubleshooting ideas

      1. The computer has multiple COM ports, and the selected port is incorrect.

      2. The device address is wrong, or there are devices with duplicate addresses (all factory defaults are 1).

      3. Baud rate, check mode, data bit, stop bit error.

      4. Host polling interval and waiting response time are too short, both need to be set above 200ms.

      5. 485 bus is disconnected, or A and B lines are connected in reverse.

      6. Too many devices or too long wiring, power supply should be provided nearby, 485 enhancer should be added, and 120Ω terminal resistance should be added.

      7. USB to 485 driver is not installed or damaged.

      8. Equipment is damaged.

      Note: To ensure the accuracy of the equipment, please clean the lower surface of the measuring area of the equipment regularly to keep it clean and free of dust or other foreign matter.

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