Uncomplicated Do it yourself INSTALLATION: Designed for most American conventional doors (proper remaining handed); installing it takes just some screws, no high priced locksmith essential; in depth manual included and that means you can set up and create this electronic door lock all by your self by using a screwdriver; https://www.evernote.com/shard/s429/sh/807d44e3-0e53-1e67-bb41-b96d653d23bd/241123f03ccc4e98b699a47abe028782