Smart Fingerprint Chain Lock with Electronic Key Child & Pet Safety Window Restrictor

1. This product utilizes semiconductor biometric technology, suitable for various scenarios including windows, refrigerators, doors, cabinets, washing machines, and file cabinets. It supports both non-drilling/drilling installation modes, can manage up to 20 fingerprints, and meets home and office security needs.
2. Semiconductor Biometric Technology effectively resists fake fingerprints, enables 1-second recognition, and provides keyless unlocking.
3. Reinforced aluminum alloy chain link ensures robust durability and resists forced opening.
4. Long Battery Life & Convenient Charging: Low-power design allows for approximately 10 months of use with 5 unlocks per day. Features USB-C fast charging for immediate use after charging.
5. The product comes with an electronic key for configuring fingerprints, adding new entries, and restoring factory settings.
6. Material: ABS + Aluminum Alloy
7. Chain Length: 24.5cm; Max spacing: 17.5cm
8. Operating Voltage: 3.5V – 4.2V