DFRobot
DFRobot Ultrasonic 7-in-1 RS485 Weather Sensor
· MPN: SEN0657
This all-in-one weather station sensor brings seven key environmental measurements into a single outdoor unit: wind speed and direction, temperature, humidit...
This all-in-one weather station sensor brings seven key environmental measurements into a single outdoor unit: wind speed and direction, temperature, humidity, atmospheric pressure, light intensity and rainfall.
It uses ultrasonic wind sensing, so there are no moving parts in the wind sensor, and includes an optical tipping bucket rain gauge for rainfall measurement. Data is provided over RS485 using the Modbus-RTU protocol, making it suitable for Arduino projects as well as PLC, LoRaWAN and other data acquisition systems.
The UV-resistant ABS housing is rated IP54, and the wide DC 10V∼30V input gives you flexibility when installing it in the field. DFRobot provides a product wiki and example tutorial to help verify sensor performance and start reading data quickly.
The package includes the RS485 7-in-1 Weather Station Sensor x1 and Adapter Cable x1.
Features:
- Professional-grade meteorological sensor: Designed for comprehensive weather monitoring.
- Replaces 7 separate sensors: Measures wind speed, wind direction, temperature, humidity, atmospheric pressure, light intensity and rainfall.
- Single cable installation: Uses RS485 for simplified wiring.
- Arduino/PLC/LoRaWAN compatible: Integrates with Arduino systems, industrial control systems, LoRaWAN setups and data acquisition platforms.
- Ultrasonic wind sensing: No moving parts for superior accuracy, longevity and minimal maintenance.
- Optical tipping bucket rain gauge: Highly sensitive rainfall measurement with 0.1mm resolution.
- Outdoor housing: UV-resistant, IP54 waterproof ABS housing.
- Example tutorial: Provided for quick sensor performance verification and rapid data access.
Specifications:
- Power Supply Voltage: DC 10V∼30V
- Working Current: ＜10mA
- Output Interface: RS485
- Output Protocol: Modbus-RTU protocol
- Measured Parameters: Ultrasonic Wind Speed & Direction, Temperature, Humidity, Atmospheric Pressure, Light Intensity, Rainfall
- Wind Speed Measurement Range: 0∼40 m/s
- Startup Wind Speed: 0.5 m/s
- Wind Direction Measurement Range: 0∼359∘
- Humidity Measurement Range: 0∼99%RH
- Temperature Measurement Range: −40∘C∼80∘C
- Atmospheric Pressure Measurement Range: 0∼120 kPa
- Light Intensity Measurement Range: 0∼200000 Lux
- Rainfall Intensity Measurement Range: ≤4 mm/min
- Wind Speed Measurement Accuracy: ±(0.5+2%FS) (60%RH,25∘C)
- Wind Direction Measurement Accuracy: ±3∘ (60%RH,25∘C)
- Humidity Measurement Accuracy: ±3%RH (60%RH,25∘C)
- Temperature Measurement Accuracy: ±0.5∘C (25∘C)
- Atmospheric Pressure Measurement Accuracy: ±0.15 kPa (101 kPa,25∘C)
- Light Intensity Measurement Accuracy: ±7% (25∘C)
- Rainfall Measurement Accuracy: ±4%
- Rain Gauge Resolution: 0.1mm
- Wind Speed Response Time: 1s
- Wind Direction Response Time: 1s
- Humidity Response Time: ≤25s
- Temperature Response Time: ≤8s
- Atmospheric Pressure Response Time: ≤2s
- Light Intensity Response Time: ≤2s
- Humidity Long-Term Stability: ≤1%/year
- Temperature Long-Term Stability: ≤0.1∘C/year
- Atmospheric Pressure Long-Term Stability: −0.1 kPa/year
- Light Intensity Long-Term Stability: ≤5%/year
- Protection Level: IP54
- Housing Material: ABS Polymer Plastic
- Sensor Cable Length: 14cm
- Adapter Cable Length: 150cm
Ideal for smart agriculture and greenhouse automation, including ventilation control, rainfall-based irrigation, natural light monitoring and frost-risk trend tracking.
Jargon buster
Plain-language definitions for the technical terms used above.
- IP54
- An ingress protection rating meaning the enclosure has limited dust protection and is protected against water splashes from any direction. This matters because it gives a practical indication of how well the product may handle dusty or damp installations.
- lux
- Lux is the standard unit for measuring how much light falls on a surface, similar to how a light meter reports brightness. A sensor that outputs lux gives readings that are easier to compare between rooms, outdoor conditions, and different projects.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs, and automation devices. Modbus support matters because it can make the controller easier to integrate with existing industrial equipment.
- ModBus-RTU
- ModBus-RTU is a common industrial protocol for sending sensor readings and control commands over serial links such as RS485. Knowing the sensor uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its readings.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
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Supplier page — dfrobot.com
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