Aluminium Alloy Smart Digital Door Lock Key benefits Multiple convenient and secure ways to unlock: APP, fingerprint, password, smart card, or mechanical key. Remote access and activity records via the Smartlife app using direct WiFi, no gateway required. Easy replacement for standard locks: fits door thickness 3855 mm and supports many mortise sizes for straightforward swapin installation. Long battery life using four AA 1.5V alkaline batteries (not included) for reliable daily use. Main features Material: Durable aluminium alloy construction with IML touch screen. Unlock modes: APP, fingerprint, password, smart card, mechanical key. Fingerprint sensor: FPC semiconductor sensor for fast and reliable recognition. User capacity: Supports up to 99 users for fingerprints, cards, and passwords. Chip: Dualcore driver for stable performance. Power: 4 x AA 1.5V batteries (use nonrechargeable alkaline AA batteries; batteries not included). AA batteries provide longer endurance than AAA. Voice guidance languages: Arabic, English, Indonesian, Portuguese, Russian, Spanish, Thai, Vietnamese. Operating temperature: 20 to 55 degrees C. Password features: Supports virtual password entry to protect real passwords and temporary or timed passwords via the app. Door compatibility: Suitable for steel, wood, brass, stainless steel, and other door types with thickness about 3855 mm. Handle and handing: Universal for right and lefthanded doors, push and pull opening; handle direction can be adjusted during installation. Mortise options: Over 24 mortise sizes available to match existing lock dimensions for easier replacement. Smartphone app capabilities Connects directly to WiFi using the Smartlife app; no gateway required. Unlock remotely from your phone. View unlock records when the lock is used. Create temporary, timed, or onetime passwords for guests or service personnel. What is included Front panel x1 Rear panel x1 Mortise lock x1 (select appropriate size option) Smart cards x5 Mechanical keys x2 Screw kit x1 Installation notes Designed for doors 3855 mm thick; measure your current mortise lock to select the correct size before ordering. Universal handing and adjustable handle direction simplify installation and replacement. Compatible with many standard mortise locks; confirm mortise dimensions for fit. Available colors Black, Silver, Red Bronze Typical use scenarios Home main entrance: Grant family members permanent access by fingerprint or card, and issue temporary passwords for visitors or cleaners. Small office or shared workspace: Manage up to 99 users, track who enters and when, and create timelimited access for contractors. Shortterm rentals and property management: Generate onetime or scheduled passwords via the app for guests and view entry logs remotely. Why choose this lock Combines multiple secure access methods with remote management and entry logging. Built for easy replacement and broad door compatibility. Practical battery solution using four AA alkaline cells for extended operation without frequent battery changes. If you are unsure whether this model fits your door, measure your existing mortise lock and door thickness, then select the matching mortise option to ensure an easy replacement.