General description The waterproof mechanical combination lock is designed for durability and security, made from high-quality zinc alloy. It features a unique 1-11 digit combination system, allowing for a customizable password that can be set between 4 to 6 digits. This lock is ideal for various applications, including office doors, interior doors, rental doors, and composite doors, where traditional keys may not be suitable. Technical specifications Material: Zinc alloy and steel Panel dimensions: 14.2 x 4.4 x 7 cm (5.59 x 1.73 x 2.76 inches) Lock body dimensions: 14.2 x 4.4 x 6.4 cm Applicable door thickness: 30-60 mm Password length: 1 to 11 digits Center distance of the locking tongue: Standard 60 mm (70 mm optional) Installation Includes screws and an English manual for easy installation Applicable for door thickness of 30-60 mm Switchable handle allows for installation on both left and right doors Usage Set a unique password using 4 to 6 digits To reset the password, press the