ROI-E680 LED
Grow Lights680W
The ROI-E680 is a 680W bar-style LED fixture from Growers Choice, running the GC-3K Full Phase spectrum and putting out a listed 1700 μmol/s of PPF — about 2.5 μmol/J.
It is built like a commercial fixture rather than a tent panel: 42.4 inches long by 42 wide and only 2.4 deep, 30 lbs., rated IP65, and wired for 120, 208, 240 or 277 Volt. Dimming is 0 - 10 Volt, so it takes an external controller rather than a knob on the housing.
Rated life is L90 past 54,000 hrs with a 5 year warranty, which is the part that matters in a room you are running year-round. The flat, wide frame wants ceiling height and a proper hanging point, not a tent bar.