Advantages of E27 lamp holder E27 Light Bulb Base Lamp Socket Adapter is widely used in daily life. Why is it so popular? This is because the Light Socket is more suitable for household circuits. As we all know, all electric devices need a suitable range of current and voltage, and E27 Lampholder has the best current and voltage bearing capacity for household circuits, so it is widely used in daily life. In addition to E27, there are E14 and E40 screw socket commonly used in home, but only E27 is the most widely used. Most manufacturers of LED lamps now produce products according to the E27 Porcelain lamp holders standard. They can be practical and have the best versatility by directly screwing them on the E27 lamp holder.