General description This Waterproof Mechanical Code Lock offers a keyless solution for securing wooden office doors with a customizable 1-11 digit code combination. Made from durable zinc alloy and steel, it ensures safety and longevity while providing a precise locking mechanism. Technical specifications Material: Zinc Alloy and Steel Door Thickness: 30-60 mm Password Length: 1-11 Digits Tab Center Distance: 60 mm Panel Dimensions: 14.2 x 4.4 x 7 cm (Approx.) Padlock Dimensions: 14.2 x 4.4 x 6.4 cm (Approx.) Installation Includes screws and an English manual for easy installation. Usage Recommended password length is 4 to 6 digits. Suitable for office doors, interior doors, and rental doors. Only one set of passwords is allowed, with non-repeating numbers. Example: If the password 123456 is set to 231456, it can still be opened. Other information Package includes: 1 x Panel, 1 x Padlock, 1 x Lock Card, 1 x Card Slot, 1 x Installation Accessories, 2 x Rubber Locks, 1 x User Manual