Install door knob and strike plates. Install the old doorknob (some buy a new knob to match the type of the wise lock) or the new knob for the door. Then, install the smart lock’s accompanying strike plates towards the door body. You'll have to bypass your browser's security warning. https://www.a-zbusinessfinder.com/business-directory/Action-1st-Loss-Prevention-Dana-Point-California-USA/34004729/