Part Number:Brrnoo42ykgmnrbp Product Dimensions:1 x 1 x 1 cm; 810 Grams Colour:Chrome Finish:Chrome Plated Material:Zinc Shape:Round Item Package Quantity:1 Number of Pieces:1 Special Features:Durable Included Components:User Manual Batteries Required?:No Item Weight:810 g Features: 1. High quality alloy lock case, the general lock case is a high quality alloy, which is waterproof. 2. After special processing of cold rails, hard casting. 3. The surface is chrome plated with fine workmanship and durability. 4. More effective against violent damage. 5. Suitable for indoor and outdoor doors. Specification: Product model: 38D Panel Material: Zinc Alloy Password length: 2-4 digits Applicable door thickness: 10-60 mm. Applicable Type: Interior Door, Outside Features: waterproof, no battery. Distance from the middle of the tongue: standard 60mm Block size: approx. 107 x 43 x 20 mm / 4.2 x 1.7 x 0.8 inches. Package list: 1 x mechanical lock set. 1 x English manual. 2 x installation package Note: Passwords are not in order, numbers cannot be repeated, please refer to the manual. Change your password: 1. Remove the 4 red screws from the back panel of the external door keyboard. 2. Open the back panel and be careful not to tamper many small parts inside. 3. See 3 digits red, 6 regular blue and 1C. 4. Press the C button to move the inner lock, but do not move part C. 6. Pay attention to the different features of the red and blue locking tabs and insert them into the slots. 7. After placing it, cover the back panel after correcting it.After tightening, check it repeatedly.Change the password button according to yours and you can unlock it smoothly and confirm success. 8. Pay attention to the fact that there are spare blocks in the accessories, you can change the number of passwords in 2 to 4 About this item HIGH QUALITY AND DURABLE: The password lock made with a high quality alloy case, the complete case is a high quality alloy which is waterproof.The surface is chrome plated with fine workmanship and durability. After special cold processing, hard casting. More effective against violent damage. CIFRE PASSWORD COMBINATION: This keyboard lock with sensitive password keys for easy use. Never worry about losing keys or strangers who make their way unexpectedly in the home or apartments Easy to use: mechanical lock of the password, no power supply required.It does not need keys or cards.Unlock via button code. Change your code whenever you want MULTI-PURPOSE: Professional door lock system provides a safe and automatic way to control access, ideal equipment for home, offices, hotels, apartments, restaurants, dormitories and so on.Suitable for indoor and outdoor doors WARRANTY: We offer a 3-month refund guarantee.If you are not satisfied for any reason, you can return it for a full refund (including round-trip shipping) and you will have nothing to lose. See more product details HIGH QUALITY AND DURABLE: The password lock made with a high quality alloy case, the complete case is a high quality alloy which is waterproof.The surface is chrome plated with fine workmanship and durability. After special cold processing, hard casting. More effective against violent damage. CIFRE PASSWORD COMBINATION: This keyboard lock with sensitive password keys for easy use. Never worry about losing keys or strangers who make their way unexpectedly in the home or apartments Easy to use: mechanical lock of the password, no power supply required.It does not need keys or cards.Unlock via button code. Change your code whenever you want MULTI-PURPOSE: Professional door lock system provides a safe and automatic way to control access, ideal equipment for home, offices, hotels, apartments, restaurants, dormitories and so on.Suitable for indoor and outdoor doors WARRANTY: We offer a 3-month refund guarantee.If you are not satisfied for any reason, you can return it for a full refund (including round-trip shipping) and you will have nothing to lose.