YEEUU smart door lock hidden high technology, bank-grade security We create products for smart home adopters, for customers who care more about home decor and living more easily than technology and gadgets. The bank-grade AES128 encryption chip keeps your fingerprint and data in the application private. YEEUU Smart Door Lock 8-in-1 Unlock Methods Just one touch to unlock your smart lock, faster than fumbling for your keys.The most secure 8-in-1 keyless entry smart door lock:App(via Bluetooth)+ Fingerprint+ Code+ Access Card+NFC Devices+ Mechanical Key,Remote Control, Voice Control. YEEUU Smart Door Lock Auto-Lock and Unlock S1 smart lock will automatically lock after unlocking for 6 seconds，keeping your home secure even when you’re in a hurry.After enabling unlocking, the lock can stay unlocked for anyone else to open until you turn it off. YEEUU Smart Door Lock Advanced ldentification Methods and Large Capacity 360° live fingerprint sensor Fingerprint + Access Card + Access Code=100 PCS(Fingerprint<50 PCS) Ultra-low Battery Consumption 3*AAA Alkaline batteries(LR03) can last over 12 months, low battery warning reminds you to change your batteries with 1000 times left to unlock. The battery compartment is designed in the front handle allows you to change the battery at any time. Mechanical Backup Key The mechanical key can be used as a backup unlock method for emergencies, which does not require any batteries to run. Highly Integrated We creatively integrate all the circuits and functional requirements in the front handle. Not only did we powerful functionality but also superior visual effects. Read more Real-time Notification Receive real-time notifications of opening, low-power, alarm alerts, and other activities anytime, anywhere with H1 Wi-Fi bridge. Trial and Error Locking S1 will stay locked after 15 times of incorrect fingerprints or 6 times of access cards incorrect attempting. For Home and Business Unlock your smart door lock anywhere anytime by setting up codes remotely for your tenant or visitors. Save time from sending the mechanical key, it's a great solution for airbnb short-term rental hosts, rental property management, and self-housing resident. Read more YEEUU Smart Door Knob (Wi-Fi Bridge Included) YEEUU Smart Door Knob YEEUU Smart Door Lever (Wi-Fi Bridge Included) YEEUU Smart Door Lever 128 USD 118 USD 119 USD 99 USD Access Code ✓ ✓ Access Card ✓ ✓ ✓ ✓ Mechanical Key ✓ ✓ Auto-lock ✓ ✓ ✓ ✓ Work with Alexa/Google ✓ ✓ Trial & Error Lock ✓ ✓ ✓ ✓ Stay Unlock ✓ ✓ ✓ ✓ Smartphone Control Remotely via Wi-Fi ✓ ✓