1. What is an 11-in-1 Agricultural Weather Station?
An 11-in-1 integrated agricultural weather station is a compact monitoring system measuring air temperature, humidity, wind speed, wind direction, pressure, rainfall, illumination, solar radiation, sunshine hours, dew point, and evapotranspiration (ET0). Engineered by HONDE TECHNOLOGY CO., LTD, these IP65-rated units use ASA plastic for outdoor longevity. By consolidating these sensors into one maintenance-free hub, they provide critical data for smart irrigation and micro-climate monitoring. This integrated solution ensures high-precision data collection for digital farming, replacing patchwork systems with a reliable, all-in-one gateway.
2. Why ET0 and Ultrasonic Sensors are Critical for Micro-climate Monitoring
Modern agriculture has transitioned from “patchwork” stations—which are prone to wiring failures and sensor drift—to integrated ASA-housed units. This shift is driven by the need for high-fidelity data in micro-climate monitoring.
The Necessity of Evapotranspiration (ET0) in Smart Irrigation
Reference crop evapotranspiration (ET0) is the cornerstone of water-saving irrigation. By calculating the water lost through soil evaporation and plant transpiration, the 11-in-1 station allows growers to automate irrigation cycles with pinpoint accuracy. Unlike basic moisture probes, ET0 provides a holistic view of the field’s water balance.
Ultrasonic Anemometer: Precision Without Wear
Traditional mechanical sensors fail due to bearing wear and bird interference. Our station utilizes a solid-state ultrasonic anemometer to measure wind speed and direction. With no moving parts, it provides maintenance-free operation. Furthermore, the specialized “bird-nest prevention design” protects the top-mounted radiation and illumination sensors, ensuring that debris does not compromise ET0 calculations or solar data.
3. Core Technical Specifications: Structure and Accuracy
The HD-WSM-A11-01 model is designed for seamless integration into digital agriculture ecosystems, providing high-resolution data via the MODBUS RTU protocol.
| Parameter | Measurement Range | Resolution | Accuracy |
| Air Temperature | -40–85℃ | 0.01°C | ±0.3℃ (at 25℃) |
| Air Humidity | 0–100%RH | 0.01% | ±3%RH (10%~80%) |
| Wind Speed | 0–40m/s | 0.01m/s | ±(0.5+0.05v)m/s |
| Wind Direction | 0–359.9° | 0.1° | ±5° (at speed <10m/s) |
| Atmospheric Pressure | 300–1100hPa | 0.1hPa | ±0.3hPa (950–1050hPa) |
| Rainfall | ≤4mm/min | 0.2mm | ±0.4mm (R≤10mm); ±4%(R>10mm) |
| Light Intensity | 0–200k Lux | 10Lux | ±3% or 1% F.S. |
| Solar Radiation | 0–2000W/㎡ | 1W/㎡ | <±5% (Reference: EKO&MS802 Grade A) |
| Sunshine Hours | 0–24h | 0.1h | ±5% |
| Dew Point Temp | -50–40℃ | 0.1°C | ≤0.5℃ (0℃–30℃, 40%–100%RH) |
| ET0 Value | 0–80mm/h | 0.1mm/h | ±25% (Hourly Updates) |
Technical Notes:
- Agronomic Units: While the device provides hourly updates (mm/h) for real-time logic, data can be aggregated into daily totals (mm/d) to align with standard agronomic irrigation models.
- Power Requirements: DC12-24V; Power consumption <0.6W.
- Transmission: Default RS485/MODBUS RTU. Optional: 4G, Wi-Fi, GPRS, LORA, or LORAWAN.
4. Proven Precision: Calibration and E-E-A-T Verification
At our Beijing-based facility, every HD-WSM-A11-01 undergoes rigorous validation. Our wind tunnel labs test wind speed accuracy across a 3m/s to 40m/s range, while high-precision climate chambers calibrate temperature and pressure. For radiation and sunshine hours, we use the EKO&MS802 (Grade A) standard as our reference point to ensure meteorological-grade reliability.
Field Verification Data (Certificate No. HD-WS251114):
- Air Temperature: Standard 20.00°C vs. Test 20.20°C (Pass)
- Wind Speed: Standard 15.00 m/s vs. Test 14.90 m/s (Pass)
- Rainfall: Standard 2.0 mm/min vs. Test 2.2 mm/min (Pass)
Actionable Advice: The Setup Syntax
A common pitfall in smart irrigation is ignoring site-specific variables. To enable accurate ET0 calculation, you must configure the station’s altitude, longitude, and latitude via ASCII commands during installation. Use the following syntax:
- Longitude (JDSD): Western Hemisphere is positive; Eastern is negative. (e.g.,
JDSD=-116.568710) - Latitude (WDSD): Northern Hemisphere is positive; Southern is negative. (e.g.,
WDSD=+40.011551) - Altitude (HBSD): Use four digits before the decimal. (e.g., for 43.5m, send
HBSD=+0043.5)
5. Seamless Connectivity: The IoT Gateway Hub
The 11-in-1 station serves as more than just a weather sensor; it acts as a gateway hub for the entire field. Utilizing its 4G/Wi-Fi wireless modules, the station can integrate auxiliary sensors—including Soil pH, NPK, Soil Moisture, and Leaf Temperature—into a unified cloud dashboard accessible via PC or mobile.
For system integrators and SCADA engineers, the device offers “unpredictable-free” integration:
- Protocol: MODBUS RTU (Function Code 03).
- Baud Rate: 9600 (Fixed).
- Data Integrity: Employs CRC16 validation (low byte first) to ensure error-free transmission in high-interference agricultural environments.
6. Maintenance-Free Design: Engineering for Longevity
Agricultural sensors must survive UV exposure, chemical fertilizers, and wildlife.
- ASA Engineering Plastics: Unlike standard ABS, our ASA housing provides superior UV resistance and impact strength, preventing yellowing and brittleness over years of field exposure.
- Louver Box Integration: The exquisite integrated structure protects the internal control circuit and the sensitive temperature, humidity, and pressure sensors from direct rain and wind-blown debris.
- Bird-Nest Prevention: The physical profile of the sensor head is specifically engineered to prevent birds from nesting. This is critical for maintaining an unobstructed view for the Total Solar Radiation sensor and the Tipping Bucket Rainfall intake, which are often compromised on traditional stations.
7. Conclusion & Commercial Call to Action
The 11-in-1 Integrated Weather Station from HONDE TECHNOLOGY CO., LTD is a high-precision, cost-effective alternative to traditional patchwork systems. It is the definitive choice for engineers and growers looking to implement water-saving irrigation and digital agriculture at scale.
Optimize your smart irrigation project today:
- [Download the detailed HD-WSM-A11-01 technical manual]
- [Request a custom quote for 4G/LORAWAN integrated systems]
Contact Information:
- Company: HONDE TECHNOLOGY CO., LTD
- Website: www.hondetechco.com
- Email: marvin@hondetech.com
Post time: Apr-07-2026

