AKONLO 4 in1 Smart Fingerprint Door Knob, Thumbprint Biometric Door Lock, Passcode Keypad Keyless Entry Door Lock with Handle, for Bedroom Home Hotel Office Apartment, Black - AKONLO Smart Door Knob

• 🔐【Four-in-one】Fingerprint bedroom door lock: anti-peeping password + fingerprint unlocking + 2 mechanical keys + APP control, 0.3 seconds recognition, door opening within 1 second, 100 fingerprints and 100 passwords can be added 🔐【Easy to Install】Suitable for both left and right doors. Bedroom Smart Door Lock is designed to fit U.S. standard doors with back panel sizes of 2-3/8" (60mm) and 2-3/4" (70mm), and door thicknesses from 1-3/8"(35mm) to 2 (50mm) 🔐【Upgraded Large Fingerprint Sensor】The new 140*140DIP sensor has a 35% larger recognition area than the old 120*120 sensor, making the recognition more accurate and stable. 🔐【USB charging】 Smart door locks have a low volume alarm and are equipped with USB ports for emergency charging. It requires 4 AAA batteries (not included) 🔐【After-sales Support】. Responsive customer service within 24 hours, if you have any questions about our door locks, please contact us for a 30-day money back guarantee, 12-month warranty, and lifetime technical support., Manufacturer: AKONLO