• 2nd Generation Mechanical Combination Lock: This mechanical keyless entry door lock features a full mechanical structure that's resistant to tampering and requires no charging or batteries. With simple installation and operation, it provides excellent anti-theft protection. The 2nd generation also makes password changes easier, and the adjustable left/right handles add more flexibility

• Universal Compatibility for Different Doors: This mechanical keyless door lock comes with multiple screw sizes and a square shaft, fitting doors with thicknesses from 1.4 to 2.5 in (35-65 mm). It's compatible with a variety of doors, including courtyard gates, garden gates, garages, storage rooms, wrought iron, aluminum, and fence gates

• Durable Zinc Alloy Material: The latch bolt is made from zinc alloy; this keyless mechanical combination door lock has a corrosion-resistant electroplated coating, ensuring water and rust resistance. It keeps your home secure in all weather conditions, from cold winters to hot summers and rainy days, with a longer work service

• Easy Door Lock Replacement: With adjustable left/right handles, this mechanical door lock fits both left and right doors. The adjustable hole distance (2.3 in /60 mm and 2.7 in / 70 mm) and wider, reinforced pads mean you don't need large holes to install it, helping maintain the aesthetic of your door while ensuring safety

• Automatic Locking & Hold Open Mode: This keyless mechanical combination door lock automatically engages when the door is closed, so you don't need to worry about forgetting to lock it. The hold-open mode is ideal for areas with frequent access, delivering added convenience