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Lightray Mobile Light- and PAR Meter | Smartphone-Based PPFD, DLI, Illuminance Meter with Photone App auspowers_batchthree Super quick car charger supportsLightray Mobile Light and PAR Meter Smartphone Based PPFD, DLI, Illuminance Meter with Photone App Product Features Photosynthetically Active Radiation (PAR) as PPFD in mol m2 s Daily Light Integral (DLI) in mol m2 d Illuminance in lux or foot candles In depth guides for beginners Best in class accuracy Light color temperature in kelvin * Extended PAR (ePAR) including far red light (ePPFD, eDLI) *