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PAR stands for photosynthetically active radiation. It designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. LEDs attempt to tailor the spectrum to the plant that is being cultivated. The spectrum visible to the human eye is about

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Halco 2x4 Flat Panel LED Fixture Wattage and Color Selectable

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electrical supplies, electrical wholesaler, electrical distributor in canada. electrical supply for residential, commercial, and industrial projects.

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