... 110LM/W, perfect performance;7. High power LED source, equivalent to 2.5~4 times traditional lights; ... environment;11. Die-Cast Aluminium Light Housing, best for heat sinking;12. Easy for install, ... cost on maintenance after the installing;13. Best partner of the solar panel, popular applied to ... Temperature-25°C ~ +65°C(25°C best)IP GradeIP65Working Life-span50000H Highest cost performance 140W LED ...