Peace, mercy, and blessings of God be upon you. I have 2 used smart door locks with light usage. They are free of defects, and you can test them before taking them. I also have 2 new ones in their boxes. It fits wooden doors only and is not suitable for external iron doors. I can also explain how to operate it upon purchase and how to control adding a remote entry code via mobile. I can also provide you with a Pakistani person who will install it for you in Buraydah. The sale is by auction within Buraydah.