Optimum plant growth with higher yields. The color Spectrum is designed to promote photosynthesis: Red - 77.1% / Blue - 22.6% / Green - .3% Nanometer ranges : Red - 600-699 / Blue 400-499 / Green 500-599 Cool operating temperatures for easier ambient air temperature control. Dimmable : 0-10V Dimming All aluminum construction. LED chips are potted with high temperature silicone epoxy.