... and magnesium alloy radiator,better heat radiation low light attenuation*Directly replace the traditional PL energy-saving ... certificationSpecification1. 4w, 5w,6w, 7w, 8w,9w, 11w, 13w, 15w are avaliable. 2. Voltage: 110v/277v AC3. ... 10.(MTBF:Mean Time Between Failure)Light attenuation quotiety:2%-4%/1HK Applications LED PL works ... restaurants etc.Picture show 3014/5050 SMD E27/ E26 15w led corn light