4-IN-1 KEYLESS ENTRY: Never get locked out again. Unlock your door using the ultra-fast Fingerprint Sensor (0.5s recognition), the digital Touch Keypad, the ENERJSMART App (via Bluetooth), or traditional Mechanical Keys (included). Stores up to 100 fingerprints and 100 passcodes. ADJUSTABLE CYLINDER FIT: Designed for versatility, this smart lock features an adjustable cylinder length to fit door thicknesses ranging from 35mm to 70mm. Includes rubber spacers to ensure a secure, flush installation on standard doors (fits 2-1/8" boreholes). APP MANAGEMENT & LOGS: Connect via Bluetooth to the free mobile app to manage users easily. View access logs to see exactly who entered and when, and generate temporary passcodes for guests, cleaners, or contractors—ideal for Airbnb hosts, HMOs, and offices. ROBUST & WEATHERPROOF: Built from high-density Aluminium Alloy and 304 Stainless Steel with a premium Silver Anodized finish. Rated IP55, it is resistant to dust and rain, ensuring reliable performance for external facing doors. BATTERY POWERED & BACKUP: Powered by 4 x AAA batteries (sold separately). Features a USB emergency power interface to jump-start the lock if batteries are depleted, plus physical backup keys for total peace of mind.