General description Made of durable zinc alloy, this Waterproof Mechanical Code Lock offers a reliable and energy-saving solution for securing your doors without the need for keys. Its unique design eliminates the hassle of lost keys, providing a cool and practical alternative for various applications. Technical specifications Material: Zinc alloy Combination: 1-11 digit code Recommended password length: 4-6 digits Application scene Waterproof and high temperature resistant Suitable for cabinets, office doors, interior doors, rental doors, composite doors, and other keyless applications Installation Includes screw package and English manual for easy installation Handle direction can be adjusted according to user preference