Smart Ball Door Lock for Left and Right Opening Doors A directreplacement ball door lock that secures standard interior and exterior doors without drilling. Designed for simple installation and multiple convenient unlocking options, it adapts to left and right door opening directions and integrates with mobile control for remote access. Key benefits Easy retrofit: Replaces existing ball door locks without drilling or modifying the door, saving time on installation. Flexible compatibility: Works with both left and right door opening directions and fits standard door preparations. Multiple backup options: Biometric fingerprint access plus a mechanical key ensure reliable entry when needed. Remote control and convenience: Compatible with the Tuya app for remote unlocking and management from your phone. Practical for varied needs: Combines hands access with traditional mechanical backup for everyday use. Main features Unlocking methods: Biometric fingerprint, mechanical key, and mobile phone remote unlocking. Remote access: Link and control the lock via the Tuya app for remote unlock and basic remote management. Direct replacement: Designed to swap in for existing ball door locks without drilling or special tools. Door direction compatibility: Supports left and right door opening directions for broad applicability. Suggested applications Residential front or interior doors: Offer keyless convenience for homeowners who want fingerprint access and remote control. Rental properties and short term rentals: Allow remote guest access and on the spot entry without rekeying. Small offices and private suites: Provide shared access with fingerprint convenience and mechanical backup for maintenance or emergencies. What you should know This lock is intended as a direct replacement for standard ball door locks and is compatible with both left and right opening doors. Remote unlocking requires connection to the Tuya app on a compatible mobile device. Mechanical key is included as a reliable backup to biometric and mobile unlocking methods. A practical, straightforward upgrade for doors that need flexible, modern access options while keeping installation simple and reversible.