5v relay module and suitable bulb adapter I have 5v relay module . I want to use it to connect e27 bulb adapter but i cant choose any suitable adapter . Pls help me sir. I to find exactly the same as the picture
There is no such thing as a "suitable" bulb holder.

Bulb holders are bulb holders. They hold a bulb. They have wires connected to them. They come in different shapes and styles, and that shape and style has nothing at all to do with how they work or how you connect them.

You pick a bulb holder that is the right kind for your project - be that a ceiling rose + pendant combination, a wall mount angled, a table lamp, a standard lamp, a chandelier from Ikea...  

If you are looking for something that is identical to that drawing then you may be sadly disappointed. That's a drawing. A representation. The actual device you choose to use is whatever device you deem is the right one for your design.