... Over-Voltage Protection High Voltage Surges Protection LED Manufacture Epistar, Cree, Semi Operating Temperature -40~+40 °LED Lamp Life 50,000 hoursRelevant ... Certificate CE, RoHS,Warranty 2 years Optical Data :Light Color Warm ... White, Neutral White, Cool White,R,G,B,Y Color Temperature 2,500-3,500K / 3,600-5,000K / 5,000 ...