1-11 digit combination key password setting. Double-sided password, passwords are required for both internal and external doors, with channel anti-lock function and indoor anti-lock function, any internal and external locks or knobs can be interchanged.
Completely mechanized, no battery or wired power is required.
Waterproof design, suitable for wooden doors, patio doors, courtyard doors, indoor and outdoor doors.
Sturdy fixing design, no noise, provide you with a quiet using experience.
Made of high‑quality zinc alloy material, anti‑rust, durable and has a long service life.