1. This lock has 2 different kinds of lock body for your option, American standard and European standard.
2. 4 units of AA alkaline batteries can keep longevity and stability of this lock.
3. This lock shell is used chrome plate and never wears out after using for a long time.
4. Users can open the door through fingerprint, password and mechanical key.
5. It adopts new version of Korean algorithms with dependability, accuracy and security.