General description The Waterproof Mechanical Code Lock is a keyless security solution designed for wooden office doors and various other applications. Made from strong and durable zinc alloy, this lock offers a precise and safe locking mechanism. It features a unique 1-11 digit code combination system, allowing for a customizable password that can be set between 4 to 6 digits. Technical specifications Material: Zinc alloy Tongue center distance: 60mm (optional 70mm) Panel dimensions: 14.2 x 4.4 x 7 cm / 5.59 x 1.73 x 2.76 inches (approx.) Lock body dimensions: 14.2 x 4.4 x 6.4 cm Applicable door thickness: 30-60 mm Installation Includes screws and an English manual for easy installation. Usage Suitable for office doors, interior doors, rental doors, composite doors, and other locations where traditional keys are not practical. Only one set of passwords is allowed, with non-repeating numbers. For example, if the password 123456 is set to 231456, it can still be opened.