This mechanical keyless entry door lock provides reliable security without batteries, wiring, or app setup. Its all-metal zinc alloy construction is designed for indoor and outdoor use with a rust-resistant finish for long-lasting durability. The 2.0 code upgrade allows code changes directly on the keypad and handle without removing the lock. It supports 4-7 digit combinations and fits a range of standard door thicknesses for flexible installation. Suitable for left-hand or right-hand doors, it works well on front doors, gates, garages, and other entry points.