Lightray Mobile Light- and PAR Meter | Smartphone-Based PPFD, DLI, Illuminance Meter with Photone App

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About This ✅ Photosynthetically Active Radiation (PAR) as PPFD in μmol/m²/s ✅ Daily Light Integral (DLI) in mol/m²/d ✅ Illuminance in lux or foot-candles ✅ In-depth guides for begi nners ✅ Best-in-class accuracy ✅ Light color temperature in kelvin * ✅ Extended PAR (ePAR) including far-red light (ePPFD, eDLI) * Show more