... 3) Different color of cover are available,easy to install and low maintenance cost4) Over 80% more efficient than incandescent lighting ... 8) Reliable protection design, free from over-current, over-voltage, short-circuit and overload risks9) No Mercury Inside, No UV, No IR, ... of it2. Schools and offices: Safe and reliable, no flickering, downy and pure light, protect eyes. No UV and IR,no damage to ...