How to install this door lock body?

This should be the lock body of the hotel credit card lock. I don't know why you took the lock apart. If you are careful when you disassemble it, you should be able to put it back if you know the location of each accessory. If it is broken, unless you are a locksmith or often disassemble and repair the lock body, it is difficult for ordinary people to put it back.

If you want to install it on the door. As long as the hole size of the lock body on the door is appropriate and the side of the door is left blank, it can be installed.

If the positions are different in size, tools are needed to change the holes. I don't know why you took the lock apart. There is a clutch in this lock body, and wires are connected to the front and rear panels of the lock.