Features: 1.High quality alloy lock case, the overall lock case is a high quality alloy, which is waterproof. 2.After special cold rail processing, hard casting. 3.The surface is chrome?plated, with exquisite craftsmanship and durability. 4.More effective against violent damage. 5.Suitable for indoor and outdoor doors. Specification: Features:_x000D_ 1. High quality alloy lock case, the overall lock case is a high quality alloy, which is waterproof._x000D_ 2. After special cold rail processing, hard casting._x000D_ 3. The surface is chrome-plated, with exquisite craftsmanship and durability._x000D_ 4. More effective against violent damage._x000D_ 5. Suitable for indoor and outdoor doors._x000D_ _x000D_ Specification:_x000D_ Product model: 38D_x000D_ Panel material: zinc alloy_x000D_ Password length: 2-4 digits_x000D_ Applicable door thickness: 10-60mm_x000D_ Applicable type: indoor, outdoor door_x000D_ Features: waterproof, no battery_x000D_ Center distance of the lock tongue: standard 60mm_x000D_ Lock Size: about 107 * 43 * 20mm / 4.2 * 1.7 * 0.8in_x000D_ _x000D_ Package list:_x000D_ 1 * Mechanical lock set_x000D_ 1 * English manual_x000D_ 2 * Installation package_x000D_ _x000D_ Note:_x000D_ The passwords are not in order, the numbers cannot be repeated, refer to the manual._x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering._x000D_ _x000D_ Before installation and use, it is necessary to confirm that the position width of the installation lock is more than 13CM, and the door seam is between 0.2-0.5CM._x000D_ The double door needs to be fixed on one side, and can only be used inside or outside._x000D_ _x000D_ Change the Password:_x000D_ 1. Remove the 4 red screws from the rear panel of the outer door keyboard._x000D_ 2. Open the back panel and be careful not to tamper with many small parts inside._x000D_ 3. See 3 red ciphers, 6 blue regulars and 1 C._x000D_ 4. Press the C button to move the internal lock piece, but do not move the C piece._x000D_ 6. Pay attention to the different characteristics of the red and blue locking tabs and insert them into the slots._x000D_ 7. After placing it, cover the back panel after correcting it. After tightening, check it repeatedly. Edit the password button according to your own, and you can unlock it smoothly and confirm the success._x000D_ 8. Please pay attention to that there are spare locks in the accessories, you can change the number of passwords to 2 to 4. PackageList: 1 * Mechanical lock set 1 * English manual 2 * Installation package