6- WAY UNLOCKING: Unlock using Fingerprint, Passcode, Bluetooth Mobile APP, RFID Access card, OTP or Emergency keys. Register upto 100 Fingerprints. Get 2 RFID Access Cards. Keep a tab with Activity logs via BLE Qubo Mobile App. Use Pincode with decoy digits to keep your code spy safe Share Access OTP via WhastApp, SMS or Email for Unexpected Guests/housekeepers : Give Permanent, One time or timed Access. Stainless steel bolts (2) to secure your main door. Lock comes with Wrong Password Sound after every attempt and a lockout for 3 minutes after 10 attempts Get Low Battery Alerts on Qubo Mobile App & Voice prompt from the lock. USB charging enables access in emergency situations in case the battery is exhausted. Battery: The lock has 4 AA battery slots. Designed for high battery life of upto 12 months DOOR REQUIREMENTS: Suitable for doors with thickness of 3.2 CM and above. Ideal for Wooden doors only.