One-touch Fingerprint Verification Method (Easy Scan)- 100 Users Easy Scan technology has been applied to Conveniently read a fingerprint in one touch to enter conveniently. Pin Code Access – 100 Users With YDM 4115, you do not have to worry about carrying anything with you. Even if you have forgotten everything, just type your PIN codes into the keypad and the door is unlocked. Mechanical key override – 2 Keys For emergency, it can also be unlocked with a mechanical key. Smart Keypad Keypad Displays functional operation with various patterns of light. Multiple Modes For multi-user environment, it can operate on Security (Master) mode where the master user can register and delete individual user while Normal mode controls all the users at one time. Strength Strong Lock body with hardened SS 304 bolts Auto Lock If you are sometimes forgetful, you can set your digital lock to automatically activate 5 seconds after you close the door – so you never have to worry whether you remembered to lock it again. ( Manual operation is also available) One Time Password