Overall I am fine with this LED, but:
For the price, there are better options out there imho.
NO graduation on the dimming potentionmeters (i.e. NO idea, how much % the light is dimmed to actually)
NO values for PPFD/DLI in any datasheet anywhere.
ONLY use this lamp when you own a reliable PPFD meter (e.g. Photone App + diffusor).
Other than that I like the concept of the two channels in theory. Alas I still have to try out whether you can really "steer" the plant growth with that or not...