This is a smart home appliance that allows you to open and close your door from your smartphone. It's a SESAME 3 black smart lock, and it comes with mounting hardware and instructions. I was using it at home, but I'm selling it because I'm replacing it. There doesn't seem to be any noticeable damage. Please check the images. There is some paint chipping on the part of the adapter where the metal screw touches. Depending on the shape of your key, you may not need to use this. There is only one set of mounting stickers. Please also check the accessories in the images. The battery is used, but it's not completely dead, so I'll include it when I ship it.