Fingerprint Anti-Theft Door Lock Series S-9177/S-9187 Function Features: 1. 5 administrators and 199 users 2. American BLACKFIN dual-core technology 3. Diamond optical fingerprint lens 4. High anti-static and durable anti-scratch 5. Intuitive and practical LCD screen prompts 6. Low power consumption and long service life 7. Battery low-voltage alarm 8. Viewing opening ID records 9. Set to open or lock 11. Self-locking stainless steel electric lock body 10. Anti-trial opening disabled function 12. Free-standing handle and anti-prying lock body