Ultrasonic 7-in-1 RS485 Weather Station Sensor for Arduino

This compact weather station module combines seven meteorological measurement functions in a robust housing and is excellent for Arduino-based environmental data collection. Ultrasonic technology measures wind speed and direction without contact, thus avoiding mechanical wear and achieving high long-term stability. In addition to wind parameters, integrated sensors measure temperature, relative humidity, air pressure, and light intensity. An optical tipping bucket rain gauge with 0.1 mm resolution and ±4% accuracy provides precise precipitation data. The RS485 interface with Modbus-RTU protocol ensures reliable data transmission over long distances and allows integration into industrial facilities or LoRaWAN-based cloud platforms. A supply voltage of 10 – 30 V DC and low power consumption under 10 mA offer flexible use options. The UV-resistant ABS housing meets protection class IP54 and is designed for permanent outdoor use. Measurement ranges extend from 0 – 40 m/s (wind speed), 0 – 359° (direction), 0 – 99% RH (humidity), −40 – 80 °C (temperature), 0 – 120 kPa (air pressure), and up to 200,000 Lux (light intensity). The rain gauge measures intensities up to 4 mm/min with a response time of less than two seconds, while most other parameters are updated within 1 – 25 seconds. With its robust design, comprehensive sensors, and easy integration, this system is ideal for agricultural facilities, smart city projects, industrial monitoring, and maritime applications.

Recommended accessories:

Features:

Multi-sensor measures wind, temperature, humidity, air pressure, light, and precipitation in one device.
The ABS housing is UV resistant and meets IP54, protecting the sensor for permanent outdoor use.
Energy-saving electronics require less than 10 mA with a supply voltage of 10 – 30 V DC.
RS485 interface with Modbus-RTU protocol allows stable and long data lines.
Ultrasonic measurement without moving parts reduces maintenance and increases accuracy.
Optical rain gauge offers 0.1 mm resolution and ±4% accuracy for precise precipitation measurements.
Long cable length (14 cm sensor, 150 cm adapter cable) makes installation in various environments easier.

Application examples:

In greenhouses, the sensor monitors climate and rainfall for optimal irrigation control.
In smart city projects, it provides data for weather stations for urban climate analysis.
In industrial facilities, it is used to monitor environmental conditions and optimize ventilation and safety systems.
On ships and in ports, it supports navigation with accurate wind and weather data.
In meteorological research stations, it provides comprehensive long-term data for climate studies.

Documentation:

Dfrobot Wiki

Technical data:

Manufacturer: DFRobot
Manufacturer SKU: SEN0657
Supply voltage: DC 10 – 30 V
Operating current: < 10 mA
Interface: RS485, Modbus-RTU
Measurement parameters: Ultrasonic wind speed, wind direction, temperature, relative humidity, air pressure, light intensity, precipitation
Measurement ranges:
0 – 40 m/s wind speed (starts at 0.5 m/s);
0 – 359° wind direction;
0 – 99% RH humidity;
−40 – 80 °C temperature;
0 – 120 kPa air pressure;
0 – 200,000 Lux light intensity;
Rain intensity ≤ 4 mm/min
Measurement accuracy:
±(0.5 + 2% FS) wind speed;
±3° wind direction; ±3% RH humidity;
±0.5 °C temperature;
±0.15 kPa air pressure;
±7% light intensity;
±4% rain
Response times: 1 s for wind speed and direction; ≤ 25 s for humidity; ≤ 8 s for temperature; ≤ 2 s for air pressure and light
Long-term stability: ≤ 1%/year humidity; ≤ 0.1 °C/year temperature; –0.1 kPa/year air pressure; ≤ 5%/year light intensity
Protection class: IP54
Housing material: ABS plastic, UV-resistant
Sensor cable length: 14 cm
Adapter cable length: 150 cm
Dimensions: 344 × 93 × 93 mm
Weight: 916 g