The adjustable deadbolt has a size between 60mm to 70mm, is suitable for doors with a thickness of 35-50mm. Simple door handle design, suitable for various scenarios, replaces standard single-cylinder U. Door locks, fits both left and right, inner and outer. Easy to install in minutes by following short installation video.You can create virtual keys to share with people you trust-set them as permanent keys or to a schedule, Lock/Unlock, grant access to others and see who comes and goes from anywhere using smart door lock is a great solution for short-term rental hosts, self-housing resident and attendance management. You can check the daily attendance of all staff, who access the door by App, card or passcode. This function can be turned on or off in the setting. Any product you return must be in the same condition you received it and in the original packaging. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.