{"product_id":"lightray-mobile-light-and-par-meter-smartphone-based-ppfd-dli-illuminance-meter-b0fw5kdng6","title":"Lightray Mobile Light- and PAR Meter | Smartphone-Based PPFD, DLI, Illuminance Meter with Photone App","description":"\u003cp\u003eThe only tool you need to master plant lighting Combine this accessory with the free* Photone - Grow Light Meter app and turn your smartphone into a professional-grade light meter. You can:   Plants perceive light very differently from humans. The light that actually drives photosynthesis and plant growth is called photosynthetically active radiation (PAR). That’s why you shouldn’t use a normal light- or lux meter for plant lighting. Humans are incapable of estimating PAR or light intensity in general as our pupils constantly adapt to the ambient lighting. The only way to know how much light your plants get is by using a PAR meter. The good news: you don’t need an expensive dedicated handheld meter. With this accessory, your smartphone becomes a precise, practical PAR meter — ready whenever you need it. Using a PAR meter lets you:   Light measurements made easy:   New to plant lighting? No problem. Photone guides you step by step with clear in-app explanations, practical tips, and built-in help so you can measure with confidence and dial in your setup correctly. * The Photone app offers two types of optional in-app purchases: 1) One-time: Unlock a specific light source for lifetime use ($5-6 USD). This improves measurement accuracy by compensating for the spectral mismatch. 2) Subscription or one-time: Pro access to additional features such as an under-water mode, ePAR readouts, read-aloud function, in-depth guides, Pro support, color temperature readings in kelvin, Apple Watch connectivity, etc. ($2.50 USD \/ month) To measure light with research-grade accuracy, the Photone app uses the most precise sensor in your device: the camera. Its unique measurement algorithm works directly with the RAW camera sensor data to capture true light intensity. Designed specifically for plant lighting, Photone lets you choose from a range of light sources such as Natural Sunlight, LEDs, High Pressure Sodium (HPS), Fluorescent (FL), Metal Halide (MH) to minimize the spectral mismatch error. This allows Photone to rival professional handheld PAR meters in accuracy. But Photone goes even further by helping you to interpret the numbers with in-app guides, tools, and many additional features. A great tool for beginners and professionals alike — helping you optimize plant growth with confidence.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Photosynthetically Active Radiation (PAR) as PPFD in μmol\/m²\/s\u003c\/li\u003e\n\u003cli\u003e✅ Daily Light Integral (DLI) in mol\/m²\/d\u003c\/li\u003e\n\u003cli\u003e✅ Illuminance in lux or foot-candles\u003c\/li\u003e\n\u003cli\u003e✅ In-depth guides for beginners\u003c\/li\u003e\n\u003cli\u003e✅ Best-in-class accuracy\u003c\/li\u003e\n\u003cli\u003e✅ Light color temperature in kelvin *\u003c\/li\u003e\n\u003cli\u003e✅ Extended PAR (ePAR) including far-red light (ePPFD, eDLI) *\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lightray","offers":[{"title":"Default Title","offer_id":49242917732609,"sku":"B0FW5KDNG6","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/8833\/0497\/files\/519Xg8eOdYL._SL1500.jpg?v=1781016022","url":"https:\/\/getplanthaus.com\/products\/lightray-mobile-light-and-par-meter-smartphone-based-ppfd-dli-illuminance-meter-b0fw5kdng6","provider":"PlantHaus","version":"1.0","type":"link"}