The Yeeuu Smart Door Lock With Fingerprint, Nfc, App, Code, Backup Keys, And Product Features ? Fingerprint Identification?Just one touch to unlock your fingerprint smart lock, faster than fumbling for your keys.The most secure 6-in-1 keyless entry smart door lock:App(via Bluetooth)+ Fingerprint+ Code+ Access Card+NFC Devices+ Mechanical Key ?Auto-Lock and Unlock?The fingerprint door 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. ?Intelligent Management?With the YEEUU app, you can grant access to your family or guests, see logs of events and alert alerts.Various access codes include: permanent access code, one-time access code, anti-snooping access code, etc. ?Ultra-Low Battery Consumption?This fingerprint smart lock can last more than 12 months with 3 AAA alkaline batteries. Since the batteries are mounted on the front bar, you can replace them without worrying about being locked out. ?DIY Installation Satisfaction Guarantee?S1 keyless entry door lock is easy to install, no extra drilling required. 1 year product warranty and lifetime 7*24 hours online customer service support after the date of purchase. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!