The Vevor mechanical keypad door lock provides keyless entry with a fully mechanical design that requires no batteries or wiring. It automatically locks when the door closes and supports easy password changes with a screwdriver. Built with a zinc alloy latch and stainless steel door plate, it is designed for weather-resistant security in outdoor and indoor applications. The lock fits doors from 1.4" to 2.5" thick and works with garden gates, garages, storage rooms, fences, and office doors.