Multifunctional 5-in-1 Fingerprint Door Lock Multi-mode Unlocking Fingerprint, password, mechanical key, E-key, alexa (additional gateway needs to be purchased). Bigger Fingerprint Identifier For better experience and fingerprint recognition rate, we have adopted a larger and more accurate fingerprint identifier for your convenience.(Before the lock is bound to the app, any fingerprint can be opened, but once the lock is bound, only the fingerprint of the app can be opened.) APP Management The lock chip can store 255 groups of passwords or fingerprints, and record the time when they open the lock, which is good for management. Important Points for Use Please download the tuya app for lock binding and subsequent use; After entering the password or fingerprint, please turn the handle to unlock before the beep stops; Please use AA alkaline battery and install the positive and negative electrodes correctly; When the battery capacity is lower than 20%, the lock will automatically alarm; Remove 2 long screws pre installed on the lock to separate the front and rear parts of the lock; Back to the lock for the second time, log out of the app first, and then connect the lock; There is an emergency power interface directly below the front handle. Read more Fingerprint Door Knob Keypad Door Knob Keypad ✓ ✓ Mechanical Key ✓ ✓ Fingerprint ✓ - APP ✓ - Material Zinc Alloy Zinc Alloy Battery 4*AA Alkaline Batteries 4*AA Alkaline Batteries Waterproof ✓ ✓