I use the different lumen output models in all of my projects because I can easily show the different light selections effect on task lighting, ambiance, general lighting or whatever meets a persons needs. Much easier than early on when I had to buy specific temperature range (color spectrum of light is what is emitted by a tungsten filament heated to 2700 Kelvin, 3200 K, 4100 K or 5000 K - other variations fo settings for different lights) ranging from warm orange to bright high blue content. Used 5000 K tubes in an exam room and it looked like a morgue - changed back to warmer. Same in the meat area of a grocery store. This is a great unit and I have not seen something I would rather use - always looking.
Verified purchase: Yes | Condition: Pre-owned
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