Ceiling light for E27 - CONCEPT

This E27 bulb socket: https://www.bauhaus.cz/voltomat-zarovkova-objimka-12209438#description 

Diameter needed for ceiling hole is at least 130 mm and maximum 140 mm.

It is important to attach the securing latches after placing the body part inside the cieling.

Useful links:

https://diy.stackexchange.com/questions/75524/how-do-i-affix-wires-to-an-e27-t210-lamp-holder 

https://support.lampspares.co.uk/hc/en-gb/articles/360023421154-How-to-install-our-push-fit-E27-and-E14-lampholders 

https://www.spares2you.co.uk/wiring-of-an-es-lampholder/ 

http://zapojenikabelu.cz/zarovka.html