Smart biometric door lock designed for residential and light commercial doors, offering fingerprint, password, and mechanical key access with an optional smart app connection. Durable zinc alloy construction and a reversible handle make it suitable for a variety of door types while providing multiple access methods and lowpower operation. Key features Multiple unlocking methods: fingerprint, password, mechanical key. Model options: 196 (standalone with fingerprint, password, key, normal open and electronic antilock) and TY196 (same functions with optional smart app control). Fingerprint capacity: 50 users. Password capacity: 100 groups, with the first three groups reserved as administrators. Fingerprint sensor: semiconductor type for reliable identification. Lock cylinder: Clevel. Emergency mechanical keys: 2 included. Power: 6 volt supply using 4 AAA batteries (not included). USB emergency charging available. Low battery alarm at 4.3 volt. Working current under 150 mA. Standby current under 30 microampere. Protection: not waterproof. Materials and finish: zinc alloy body with polished finish. Color options: silver and black. Handle style optional. Handle width about 2.8 cm. Dimensions: 150 x 65 x 28 mm. Package size: 25.5 x 18 x 8 cm. Package weight about 0.88 kg. Functions and performance Access control modes include normal open function and an electronic antilock for controlled entry behavior. Administrator structure: the first three registered fingerprints and the first three password groups act as administrators for system management. User management: add or remove fingerprints and passwords through the lock interface. Adding fingerprints: the initial three fingerprints register as administrators; subsequent fingerprints register as regular users. Typical enrollment requires multiple presses until confirmation LED indicates success. Emergency access options include mechanical keys and USB charging for battery emergency power. Compatibility and installation Suitable for wooden doors and glass doors with appropriate preparation and mounting. Handle direction is reversible to fit left or right swing doors. Optional smart app control available for the TY196 model for remote management and additional features when used with a compatible smart app. Practical applications Home front doors where secure, keyless everyday access and user management are required. Office interior doors that need controlled access with administrator and user levels. Shortterm rentals or guest rooms where temporary user codes and fingerprints are convenient. What is included and notes Builtin semiconductor fingerprint reader, lock body, reversible handle, and two emergency mechanical keys. Batteries are not included. Use 4 AAA batteries for normal operation. USB emergency charging supported. Not suitable for outdoor installations without additional weather protection since the unit is not waterproof. This lock combines biometric verification, keypad convenience, and mechanical backup in a compact zinc alloy design for reliable, flexible access control in homes and small businesses.