Smart digital door lock with fingerprint, APP, card, password, and mechanical key access. Battery powered for easy installation and maintenance. Designed for wooden, brass, and stainless steel doors. Key benefits Multiple access options: fingerprint, passcode, card, mechanical key, and APP control provide flexible entry methods to suit different users and situations. Convenient power: runs on dry batteries for simple replacement without wiring. Practical compatibility: fits wooden, brass, and stainless steel doors for residential and light commercial use. Remote management: APP access lets authorized users unlock or manage entry settings from a phone when configured. Reduced key dependency: fingerprint, card, and password options minimize the need to carry physical keys. Main features Unlocking methods: APP, mechanical key, card, password, fingerprint. Power supply: dry battery. Suitable door types: wooden door, brass door, stainless steel door. Ideal for retrofit: designed to conventional locks without major door modification when dimensions match. Typical applications Home front door: convenient daily entry for family members using fingerprint, code, or card, with APP control for remote access when needed. Small office or studio: manage staff access without distributing physical keys and use the APP for simple user administration. Short term rental or guest access: provide temporary codes or APP access to guests instead of sharing mechanical keys. Notes for buyers Confirm the lock dimensions and door thickness before installation to ensure compatibility. Keep spare batteries on hand to maintain reliable operation. Use the mechanical key option as a backup in case of battery depletion or APP connectivity issues.