Smart biometric door lock with builtin camera and rechargeable battery. Color: 22x190r; Size: BLACK. Key benefits Secure biometric access that accepts fingerprint and finger vein recognition to reduce reliance on physical keys. Continuous monitoring with a builtin definition camera, motion detection, and instant mobile alerts for improved awareness of activity at the door. Flexible access options including app control, WiFi, mechanical keys, RFID card, keypad password, and temporary guest codes for family members and service providers. Robust antitamper features with automatic data locking and encryption to protect stored credentials and access logs. Main features Power supply: builtin rechargeable battery for uninterrupted operation and easy recharging. Compatibility: fits door thickness from 35 mm to 55 mm; direction reversible for left or right opening doors. Suitable for wooden doors, brass doors, stainless steel doors, and other common door types. Material: durable zinc alloy construction. Special features: builtin doorbell, builtin peephole, builtin screen for visitor viewing and local interaction. Doorknob function: biometric, mechanical key and keypad support. Connectivity: WiFi for remote management and realtime alerts. Ways to unlock: app, mechanical keys, finger vein recognition, card, WiFi, password, fingerprint. Security and privacy precision fingerprint sensors and antispoofing measures to help ensure only authorized users gain entry. Motion detection and continuous camera monitoring with push alerts to a connected mobile device. Multiple user profiles and temporary access codes allow controlled, timelimited entry for guests or service personnel. Tamper alerts and automatic data protection reduce the risk of unauthorized access or data compromise. Practical use scenarios 1. Residential front door: a traditional lock to allow family members to use fingerprints or smartphone app access while retaining mechanical keys as backup. 2. Short term rentals and property management: create temporary passcodes for guests and monitor arrivals with camera logs and notifications. 3. Small office or studio: manage multiple employee profiles, use keypad entry for shift workers, and receive alerts for after hours activity. Important note When ordering, refer to the picture size of the second variant for sizing reference. will use the door lock size shown in the second variant picture.