Upgraded 2.0 Mechanical Lock Keypad: Update your code directly using the handle and keypad without removing the lock. Unlock with a simple mechanical code—no electronics to worry about, and clear input with the C key for quick corrections Reliable Security without Batteries: This single-sided mechanical keyless door lock operates without batteries or wiring. It supports 4-7 digit codes using numbers and the letters X and Z, with any-order entry for added security against code guessing Fits More Door Types: This mechanical keyless entry door lock comes with 4 spindles (fits 1.4"-2.5"/35-65mm door thicknesses) and 2 latch sizes (2.3"/60mm & 2.7"/70mm) for varied door depths. The lock can be mounted on both left-hand and right-hand doors Code-Free Entry for Outdoor Convenience: Turn the handle to unlock—no keypad input needed. Our mechanical door lock is ideal for exterior doors like front entrances or backyard gates, making quick entry easier during daily comings and goings Built to Last in Daily Use: Featuring a sturdy zinc-alloy body with a rust-resistant coating, this mechanical keypad door lock withstands rain, sun, and frequent use. It is ideal for front doors, garden gates, garages, and indoor or outdoor entry points