... .Modular design 2.Easy maintenance 2.50000hrs,3year warranty 3.>83Lm/W,+ future upgrading 4.Industry,square,parking lot use LED HIGH BAY ... are in modular design, each made of 1-14 LED modules, 1-2 LED drivers and one housing. Applicable for industrial lighting, warehouse ... voltage 120V or 220V, it outputs power to 1-7 LED module.2. LED Module ---IP patented optics design ensures high luminous efficiency ...