Smart Fingerprint Door Lock

Lock and unlock your door in a single motion - by scanning your fingerprints as you grip the door handle. A lightning speed of 0.1 seconds is all that is required to open. Much faster than any key. No wires are required. Fits standard-sized doors of 1-3/8'' to 2-1/8'' (35 to 55mm) door thickness, adjustable latch 2-3/8''(60mm) or 2-3/4''(70mm). Suitable for both left and right-handed doors. Voice prompts guide you to set up to 20 fingerprints, including 2 admin-user fingerprints. Note: When 2 admin-user fingerprints have been collected, adding a new one will prompt normal-user fingerprint collection. Built-in 800mAh lithium batteries provide uninterrupted power for the fingerprint door lock. There is a Micro USB emergency power interface to charge the batteries.   Worry-Free 30 hassle-free return policy and 24-hour technical support by email or by phone. Before installing, please scan the QR codes in the user manual to watch the installation video.