JOUNJIP Mechanical Deadbolt Lock - Keyless Entry Door Lock - Code NOT Required When Locking – 100% Mechanical with Flat Spindle, Thumb Turn Door Knob - Matte Black [UPGRADED 2025]

Introducing the JOUNJIP Mechanical Deadbolt Lock, the upgraded 2025 version that brings convenience and security to your door. This innovative lock features a quick-code change system and the unique ability to lock without entering a code - simply close the door and you're secure. Factory-set for right-hinge doors but easily convertible for left-hinge installation, this versatile deadbolt offers maximum flexibility. The matte black finish adds a modern touch to any door while maintaining durability. The mechanical design eliminates the need for batteries, providing reliable, maintenance-free operation. The flat spindle design ensures smooth operation, and the included extension kit comes with various spindle sizes (87mm and 135mm) and necessary mounting hardware for different door thicknesses. Perfect for residential use, this lock combines practical functionality with robust security features. The thumb turn mechanism provides easy operation from the inside, while the keyless entry sy