Key benefits Multiple reliable access options: unlock by app, fingerprint, password, smart card, or mechanical key to suit different users and situations. Remote control and activity tracking: connect via the Smartlife app using WiFi direct with no gateway, unlock remotely, view unlock records, and create temporary or timelimited passwords. Easy retrofit and flexible installation: fits most doors 38 to 55 mm thick, reversible for left or right opening, and available with multiple mortise sizes for direct replacement. Main features Material: durable aluminium alloy construction with an IML touch screen surface. Unlock modes: APP, fingerprint, password, smart card, mechanical key. Fingerprint reader: FPC semiconductor sensor for fast biometric recognition. User capacity: supports up to 99 users for fingerprint, card, and password entries. Chip: dual core driver for responsive performance. Power: runs on 4 x AA 1.5 V batteries (batteries not included). Use nonrechargeable alkaline AA batteries for endurance. Battery note: AA batteries are larger and provide longer runtime than AAA batteries used in some other models. Languages for voice prompts: Arabic, English, Indonesian, Portuguese, Russian, Spanish, Thai, Vietnamese. Operating temperature: minus 20 to 55 degrees Celsius. Password features: supports virtual password entry and temporary or timed passwords via app. Touch screen: IML material for reliable touch input. Door compatibility: suitable for steel, wood, brass, stainless steel and other door types. Door thickness compatibility: recommended for doors approximately 38 to 55 mm thick. Installation flexibility: universal left and right orientation, push or pull opening, adjustable handle direction. Smart functions via Smartlife app WiFi direct connection, no additional gateway required. Remote unlocking and remote administration from a smartphone. Audit trail: receive unlock records when the lock is used. Create temporary, timed, or guest passwords from the app. Mortise and installation guidance Over 24 mortise lock sizes available to match existing installations. Measure your current mortise to choose the correct size for easy replacement. The lock is supplied for universal installation and supports straightforward handle direction adjustment. What is included Front panel x1 Rear panel x1 Mortise lock x1 (selectable option) Smart cards x5 Mechanical keys x2 Screw kit x1 Practical use scenarios Residential front door: give family members fingerprint access, set temporary guest passwords for cleaners or visitors, and review unlock history from your phone. Office interior or small business: assign cards or passwords to employees, enable temporary credentials for contractors, and manage access remotely. Short term rental or property management: create timelimited passwords for guests via the app and block access automatically after checkout. Notes for buyers Measure your old mortise lock size before ordering to select the correct mortise option for a seamless replacement. Use nonrechargeable alkaline AA batteries only; batteries are not included. Available colors: Black, Silver, Red Bronze. This smart door lock combines multiple opening methods, remote management, and flexible installation to a wide range of mechanical locks while offering modern access control features.