New Sensor Unlocks Precision Lighting for Growers

Dutch agri-tech firm Ledgnd is set to unveil a major advancement in precision lighting at GreenTech Amsterdam 2025 with the integration of Aranet’s new Light Spectrum sensor into its digital platform, MyLedgnd. The move provides growers with a real-time, wireless tool to track and fine-tune their greenhouse lighting across the entire light spectrum – from ultraviolet to near-infrared.

While most growers currently rely on PAR (photosynthetically active radiation) sensors that capture the 400–700 nm range, Aranet’s latest innovation spans a much broader 350–950 nm range. This allows for more precise light mapping, including visibility into colours beyond the PAR spectrum, which can significantly influence crop performance. For ornamental and high-value crops, where both quality and uniformity matter, this leap in data resolution could translate into measurable yield and energy gains.

From Data to Action

Growers visiting GreenTech will be able to see live demos at the Ledgnd stand (02.231) and Aranet booth (01.625). Ledgnd’s MyLedgnd platform processes the incoming sensor data to generate intuitive dashboards that visualise the light spectrum in context with climate data and crop feedback. This enables growers to align lighting with crop-specific needs – adapting not just to intensity but to wavelength requirements as well.

“There’s no one-size-fits-all when it comes to light,” a Ledgnd spokesperson commented. “Each crop responds differently to colour and intensity. This new sensor, combined with MyLedgnd’s visualisation tools, helps growers deliver the right light mix at the right moment – boosting growth while saving energy.”

The wireless sensor captures data at intervals as frequent as every minute, transmitting via long-range radio to either Aranet Cloud or the MyLedgnd system. It can also feed into existing climate computers for integrated decision-making. With a battery life of several years and flexible placement, the sensor is designed to fit seamlessly into commercial greenhouse operations.

Lighting Strategy Meets Sustainability

As more growers shift towards LED lighting – drawn by energy efficiency and sustainability – the ability to manage light with precision becomes increasingly critical. The Light Spectrum sensor doesn’t just support crop performance; it also opens the door to energy savings through smarter dimming strategies and longer-lasting lighting infrastructure.

By monitoring specific colour chips and adjusting the output accordingly, growers can avoid overloading certain LEDs, extend fixture lifespan and lower maintenance costs. The sensor’s affordability also means the benefits of spectrum-based lighting can now reach a broader base of growers, regardless of scale.

📌 The next issue of FloraCulture International will be themed on technology and innovation in horticulture, with full GreenTech coverage.