All New LAVNA LA16 Smart Door lock, this is a Hightech Fingerprint Lock with strong features and simple to use. Minimum thickness required of the door is 30MM for proper installation and working of the lock. This Digital Lock makes your unlocking very easy. You can say that your finger, your key & no one can take your key. This lock will get connect to your MOBILE & you can operate your lock completely through mobile. Download LAVNA Smart Life Mobile app for complete setup. This lock will eliminate so many things like manual locking, making multiple keys for family members, no need to carry your key when you go out and so on. The lock is suitable for wooden door and it is universal and simple to install, It can be installed both the side left or right of the door & both opening indoor and outdoor. It is advised to get it installed after contacting to our customer support team for any HELP. It is very easy to install, any normal carpenter can install the lock for his complete help , our customer care team share the installation video and help on video call too.