... facilitate the installation and replacement.2,Efficient and energy saving:Led bulb , Efficient constant-current drive circuit, The conversion>90%, ... reduce the cost of maintenance and management.3,Electrical stability:Led bulb , AC85V-AC265V 50/60Hz, The wide voltage and ... off and great voltage fluctuation range.4,Environment-Friendly: Led bulb,Waste materials can be recycled, No pollution, No Mercury ...