Mechanical Keyless Entry Door Lock – Secure, Reliable Access Battery-Free Design for Smooth Operation Enjoy worry-free, keyless access with this mechanical combination door lock, eliminating the need for batteries, keys, or access cards. Its robust zinc alloy latch bolt ensures excellent performance under any weather conditions, making it waterproof, rust-proof, sun-proof, and freeze-proof. Designed to fit a variety of door sizes, it comes with multiple screws and square bolts, making installation simple and hassle-free with the help of video guides and instructions. Advanced 2nd Gen Combination System Versatile Door Compatibility Sturdy Zinc Alloy Construction Quick Installation Process Dual Functionality Key Features Mechanical Lock with Advanced Design: The second-generation keyless combination lock offers tamper-resistant security without batteries or wiring. Left/right adjustable handles provide flexibility, and password changes are made simple for enhanced safety and