Secure electronic lock with a adjustable 1 to 15 digit keypad, designed for reliable protection of file cabinets, drawers, and sauna lockers. Key benefits Flexible security. User selectable code length from 1 to 15 digits allows simple or complex access codes to match the level of security required. Dependable power management. Three low battery warning beeps notify users early, and the lock still permits over 100 additional unlock attempts after the first warning. Emergency access. 9V battery backup interface provides temporary power when the internal battery is depleted, preventing lockout. Long lasting construction. Built from zinc alloy materials for extended longevity and resilience against routine wear, suitable for frequent use environments. Practical compatibility. Compact electronic design fits typical file cabinets, drawers, and sauna locker doors, making it useful for retrofit and installations. Function and performance Electronic keypad control for quick, keyless access with adjustable digit length. Clear low battery alerts and an emergency backup input ensure continuous operation in real world conditions. Robust mechanical housing in zinc alloy supports intensive daily use without sacrificing reliability. Use scenarios Office records: Secure confidential folders and legal files in cabinet drawers while allowing authorized staff fast keypad access. Spa and gym lockers: Protect guest belongings in sauna and locker areas where moisture exposure and frequent use demand durable hardware. Workshop and storage drawers: Keep tools or supplies locked during off hours while maintaining easy access for authorized team members. Who this is for Facilities managers, small business owners, and individuals who need a compact, durable, and reliable electronic locking solution for cabinets, drawers, and lockers. What to expect A compact, keypad driven lock that combines adjustable passcode length, clear low battery alerts, and a 9V backup interface with zinc alloy construction for continued performance in everyday and intensive applications.