The lamp head unit is encased in a powder coated cast aluminum alloy waterproof housing to protect heat and dust pollution elements. The charge controller unit of lamp head has highly efficient charging process with improved System indicators and alerts the user to potential malfunctioning. This model replaces 36W CFL street lights. With super bright LED the lighting system saves energy by 55%. These lamps are highly desirable for park,boat docks, Industrial, Airport & Bridge lighting.