Compatibility: E27 screw lamp holder fits all types of LED light bulbs (such as sensor light bulb, filament light bulb), the maximum power is 60W. Not compatible with incandescent and halogen bulb as high temperature will melt the lamp holder. Easy to Install: Size 91*53mm, simple wiring, easy for installation, direct connection to AC 230V. The power cord can be well covered, with decent amount of room in the back. As the plastic housing is fragile, so be careful not to over tighten the bulb. Fit for Purpose: The main part of E27 lamp bulb holder is ceramic, high temperature resistant (500), safe and durable. The outer shell is made of flame retardant material. The E27 screw bulb holder is suitable for temporary lighting in new buildings. Application: The E27 lamp bulb holder is practical for wall/ceiling lighting fixture. Good for temporary lighting and recessed lighting, such as wall lamp, ceiling light, ceiling fan lights. Ideal for porch, living room, bedroom, garage, basement, storage room, loft, workshop, balcony, etc. NOTE: The mounting screws are not included. No earth connector. 1 year of quality guarantee.