【Versatile Security Solution】This smart fingerprint lock is designed for multiple applications, including windows, refrigerators, doors, cabinets, washing machines, and file cabinets, offering comprehensive home and office security. 【Advanced Biometric Technology】Utilizing semiconductor biometric recognition, the lock can manage up to 20 fingerprints with a self-learning function that improves accuracy over time. 【Customizable Settings】Features include factory reset capability for effective fingerprint clearing or resetting, and customizable window opening with indoor ventilation limiting function. 【Flexible Installation】Choose between strong acrylic adhesive backing or screw mounting for secure and long-lasting installation to suit various surfaces. 【Long-lasting Battery Life】Low power consumption design allows for approximately 10 months of use with 5 daily unlocks, supported by convenient USB-C fast charging for immediate use. Specifications: Material: ABS + Steel Wire + Adhesive Backing Operating Voltage: 3.5V-4.2V Fingerprint Capacity: Up to 20 fingerprints Charging Method: USB-C fast charging Battery Life: Approximately 10 months (based on 5 daily uses) Installation Options: Adhesive backing or screw mounting Compatible Surfaces: Windows, refrigerators, doors, cabinets, washing machines, file cabinets