Smart fingerprint and app door lock designed for secure, convenient access control for residential and light commercial doors Key benefits Multiple reliable unlock methods: fingerprint, password, smart card, mechanical key, and mobile app for remote access. Simple retrofitting: fits standard doors with thickness from 38 to 55 mm and supports many mortise sizes for easy replacement of existing locks. Low maintenance power: uses four AA 1.5 V nonrechargeable alkaline batteries for longer endurance than AAA cells. Remote management and audit trail: WiFi direct connection to the Smartlife app gives remote unlocking, access records, and temporary or timed passwords without needing an extra gateway. Main features Unlock modes: mobile app, fingerprint, numeric password, smart card, mechanical key. Fingerprint sensor: FPC semiconductor sensor for fast fingerprint reading. User capacity: up to 99 users for fingerprints, cards, and passwords. Processor: dual core driver chip for responsive performance. Touch screen: IML material touch panel. Power: 4 x AA 1.5 V batteries required, batteries not included. Use nonrechargeable alkaline AA batteries. Voice prompts: Arabic, English, Indonesian, Portuguese, Russian, Spanish, Thai, Vietnamese. Operating temperature: 20 to 55 C. Password features: supports virtual passwords to prevent code peeking. Door compatibility: suitable for steel doors, wood doors, brass doors, stainless steel doors, and other common door materials. Installation and compatibility Compatible door thickness: 38 to 55 mm. Measure your existing mortise lock size to select the matching mortise option for straightforward replacement. Mortise options: over 24 different mortise lock sizes available. Choose the correct size based on your existing lock measurements. Orientation and handle: universal for right and left doors, supports push and pull opening, and handle direction can be adjusted . Note: mortise lock may be included depending on the chosen option. Smartlife app capabilities Connects via WiFi direct, no separate gateway required. Remote unlock by phone app. View unlock records when someone opens the door. Create temporary passwords or timed passwords for visitors or service staff. Package contents Front panel x1 Rear panel x1 Mortise lock x1 (depending on selected option) Smart card x5 Mechanical key x2 Screw kit x1 Practical use scenarios Home main entrance: assign family members fingerprint access, share temporary passwords for cleaners or guests, and review unlock logs remotely. Apartment or rental property: grant timed access for shortterm rentals, set virtual passwords for couriers, and manage multiple users up to 99. Office or small business: use smart cards for staff, monitor entry records, and keep mechanical keys for emergency access. What to check before ordering Confirm your door thickness is within 38 to 55 mm. Measure the current mortise lock size and select the matching mortise option to ensure an easy swap. four AA 1.5 V nonrechargeable alkaline batteries separately, as batteries are not included. This lock combines multiple modern access methods, app control, and adjustable installation options to provide a practical upgrade for a wide range of standard doors.