France Style Big Panel No Power Supply Keyless Waterproof-Fireproof Mechanical Code Door Lock

France Style Big Panel No Power Supply Keyless Waterproof-Fireproof Mechanical Code Door Lock. No Power Supply Operation: Mechanical code lock requires no batteries or external power source. Waterproof and Fireproof: Designed with waterproof and fireproof features for enhanced safety. Heavy-Duty Zinc Alloy: Solid zinc alloy die-casting trim with top-grade raw materials. Anti-Saw Deadbolt: Big deadbolt with anti-saw function for superior security. Customizable Backset: Standard 60mm backset with customized 70mm option available. Customizable Keyway: Standard double-row-pin keyway with customized keyway supply. Versatile Finishes: Available in Stain Chrome, Black, Antique Copper, and Polished Brass. Reversible Design: Easily reversible for left and right handing installation.