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- Wireless PAR Sensor
Measure the actual solar energy reaching your canopy or growing surface — not just a weather forecast estimate. This WMO-standard pyranometer sensor connects to the Growlink platform to deliver precise, real-time solar radiation data across a 300–3200 nm spectral range. Use it to fine-tune lighting supplementation, validate DLI targets, characterize solar performance across field zones, and power your sensor network with the same energy it's measuring.
What This Sensor Monitors
Solar Radiation
Measures incident solar radiation from 0–2000 W/m² across a 300–3200 nm spectral range — the full solar spectrum from UV through near-infrared.
Hemispherical Coverage
2π solid angle measuring geometry captures radiation from the full upper hemisphere, not just a narrow cone — the correct approach for true irradiance measurement.
Temperature-Compensated Output
Built-in temperature compensation circuit maintains ±2% accuracy across –10°C to +40°C, eliminating drift caused by ambient temperature swings.
Sensor Specifications
| Parameter | Value |
|---|---|
| Spectral Range | 300–3200 nm |
| Measurement Range | 0–2000 W/m² |
| Sensitivity | 7–14 μV · W⁻¹ · m² |
| Measuring Angle | 2π solid angle (hemispherical) |
| Response Time | ≤35 s (99%) |
| Cosine Correction | ≤±7% (at 10° solar elevation angle) |
| Temperature Effect | ±2% (–10 to +40°C) |
| Long-Term Stability | ±2% / year |
| Operating Temperature | –40 to +80°C |
Key Features
WMO Standard
Conforms to World Meteorological Organization standards for solar radiation measurement — the same benchmark used in professional meteorological and agrometeorological networks.
Long-Range Wireless
LoRaWAN® 863–930 MHz transmits from open fields without Wi-Fi infrastructure. Optional NB-IoT for remote sites with cellular coverage only.
Harsh Environment Ready
Rated for –40°C to +80°C operating range with ±2%/year long-term stability. Built to stay accurate through full growing seasons and years of outdoor exposure.
Expandable System
Combine with additional Sensor Probes on the same hub to build a complete microclimate monitoring station — solar radiation, temperature, humidity, and more from one device.
Flexible Power
Powered via included DC supply (12 VDC). Optional solar panel add-on creates a fully self-sustaining, off-grid monitoring node — powered by the very energy it's measuring.
Growlink OS Integration
Solar radiation data feeds directly into Growlink dashboards to track DLI accumulation, validate supplemental lighting decisions, and correlate radiation with crop response.
What's in the Box
Connectivity & Compatibility
Integration HUBs
Playing Nicely With Brands You Love
Don’t ditch your favorite products; let’s join them all together! Your Growlink controller has the ability to operate with hundreds of third-party products.
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