I am selling this item because it is not compatible with the door of my new home, after using it for several months. Please refer to image 5, as one short fixing screw and one small height adjustment plate are missing. Adhesive tape is still remaining. Batteries are also included. Qrio Lock is a smart lock that allows you to operate your keys with your smartphone. It not only allows you to operate your keys with your smartphone, but also adds convenience and peace of mind to your home keys. Your lifestyle will become more free.