Tools | Measurement | Spectroradiometer | Human Centric Lighting | Horticulture | Oct 22, 2019

nanoLambda XL-500 - Tiny Spectroradiometer to Find Optimum Spectrum for Plants and Humans

nanoLambda, No.1 spectral sensor company, announced XL-500, a tiny BLE spectroradiometer with free Android and iOS apps, designed for lighting researches and industrial uses in plant, animal and human centric lighting fields.

The XL-500 measures and records light spectrum with absolute power values, such as SPD (W/m2/nm), PAR/PPFD (umol/m2/s/nm) and Lux (lm/m2). Also CCT (K), CRI, and CIE values for color are measured. nanoLambda packed all these functions with rechargeable battery and Bluetooth Low Energy(BLE) into an light weight and compact size (28g @ 39x26x16 mm). Users can set the measurement period and interval to measure the light spectrum continuously over a few weeks at one battery charge. 

Recently, a leading human-centered lighting research group at the École Polytechnique Fédérale de Lausanne (EPFL) and University of Basel in Switzerland, and University of Oxford in UK, published a research paper, "What is the 'spectral diet' of humans?",  where the team used XL-500 as a wearable sensor.  Large-scale projects using hundreds of XL-500(s) to collect big data sets over the real world are their next steps.

nanoLambda was also selected as one of 9 startups in the GROW Agri-Food Tech Accelerator program in Singapore. "XL-500 will be very useful in agriculture industry," said Bill Choi, CEO of nanoLambda, "enabling to find out right recipe of spectrum and monitor the effective spectral nutrient for different plants at different growth phases, to improve yield and quality." XL-500 is available online for purchase, along with other spectral sensor products for various nondestructive or noninvasive sensing applications.

More information on nanoLambda's XL-500 can be found at

About nanoLambda:

nanoLambda is the No.1 spectral sensing company, making nondestructive agri-food sensing & noninvasive personal health monitoring with clinical accuracy, available anywhere. nanoLambda's unique digital nano fusion technology enables ultra compact low cost optical spectrometer, affordable for mobile, wearable and any IoT devices. -


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