36-in Linkable LED Under Cabinet Plug-in Grow Light - White

How far above plants should the light be?
Seedling Stage – 24-30"; Vegetation Stage – 18-24"; Flower and Fruit Stage – 6-18”
Is prolong exposure to this light bad for human skin?
Our LED grow lights produce light in a visible spectrum; they do not pose a UV risk.
Do you know the PPF value of these lights?
PPF is 44.
What are the PAR and PPF values for this grow light?
PAR: 44.
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