Smart Door Lock Built-in Doorbell Keyless Electronic Lock

Five unlocking methods, freer entry: This keyless door lock combines fingerprint, password, NFC card, APP and mechanical key access for family, tenants or staff. Semiconductor fingerprint recognition is faster and more precise than ordinary optical sensing, reducing forgotten-key stress Nearby and timed authorisation: Connect this fingerprint door lock to Tuya/Smart Life for low-power Bluetooth control (max. control distance: 10 m). Create permanent, temporary or timed passwords, bind cards and fingerprints, and review opening records for visits, rentals or staff access Built-in doorbell and prompts: This smart door lock includes a doorbell speaker that sounds when visitors press it, helping make arrivals clearer at homes, offices, villas or hotels. The integrated design adds a visitor alert without requiring a separate doorbell device Wide fit, easy replacement: This digital door lock fits doors 3.5-6cm thick and a 5.4cm opening, with left-hand or right-hand installation. Designed to replace ball locks and three-rod locks easily, it supports a practical upgrade using the included fitting accessories and guidance Safe backup and stable use: Four AA alkaline batteries power this electronic door lock (not included), with a low-battery alert for replacement. If power runs out, use a power bank with USB-A to USB-C emergency supply or the backup key. The ADC12 aluminium, PC and tempered-glass body has a copper cylinder