Key benefits Multiple convenient unlock options for everyday use and remote access. Fast biometric fingerprint recognition for quick entry without keys. Long battery life and USB emergency power to avoid lockouts. Flexible voice prompt language selection to match user preferences. Works with common smart home apps and NFC enabled phones for easy integration. Features and functions Unlock methods: remote unlock with no additional gateway required, Tuya Smart and SmartLife app, fingerprint, numeric password, magnetic card, NFC on compatible mobile devices, and mechanical key. Biometric fingerprint recognition: fast and reliable fingerprint scanning for immediate unlock. Voice prompts: change language or voice prompt at any time by entering the following codes: 555666880# English 555666881# Ting Vit 555666882# Português 555666883# 555666884# 5556666885# 5556 66886# Español 555666887 # Bahasa Indonesia Power and battery: standard batteries last about six months under normal use, builtin low battery warning, and a USB emergency power interface for temporary power if batteries run low. Compatibility and performance App compatibility: works with Tuya Smart and SmartLife app for remote control and management. NFC compatibility: accepts magnetic cards and supports NFC on compatible smartphones and smart mobile devices for cardless access. Security options: multiple authentication choices allow owners to choose the balance of convenience and control. Practical applications Residential front door: provide family members with fingerprint, password, or app access while retaining a mechanical key for backup. Small office or storage room: manage staff access through app control, temporary passwords, or magnetic cards without installing additional gateways. Short term rentals and property management: grant remote access for guests, set temporary codes, and monitor entry without complex setup. What this product solves Eliminates lockouts by offering multiple independent entry methods including USB emergency power. Reduces the need to share physical keys by enabling secure biometric, app, or NFC entry. Simplifies setup and integration by supporting common smart home apps without requiring extra gateway hardware. What to expect A smart lock system focused on practical access control, compatibility with smart home apps, and reliable battery performance. Quick biometric unlocking and configurable voice prompts to suit diverse user needs. Note Language codes and compatibility references are provided for user setup and do not imply product endorsement.