This is a backplate for the Ring Doorbell Pro (first version). The backplate has flat back with a hole for wires to come out. You can use super strong double side tape to side the doorbell to brickwork or what you one. No need to drill holes.
I used Gorilla double sided mounting tape clear
You will need M3 counterink screws to fix the doorbell to the backplate.
The author marked this model as their own original creation.