Features:Mechanical Code Lock has good waterproof performanceHigh quality alloy lock shell,and the overall is made of premium alloy for durabilityThrough the special cold rail processing completely, harden castingChrome-plated surface, exquisite workmanship, durableMore effective against violent destructionSpecification:Panel material: zinc alloyPassword length :4-7 bitsLock body material: steel plus zincApply thick door: 30 - 60 mmColor: silverApplicable type: indoor, outdoor doorFeatures: waterproof, no battery powerCenter distance of locking tongue :60mWeight: 1439 g / 50.8 oz(approx.)Package list:2 * lock body1 * box1 * installation accessories2 * lock pad1 * lock tongue1 * instructionNote: 1.The password is not in order, the number can not be repeated.Please use the password card or change the password before use. Take the front panel and remove the back four screws. Take off the cover plate, Hold down the C key and take out the password chip with tweezers. Loosen the C key if it cannot be taken out.For non-password key, put the stainless copper password key into the slot that you want to set as the password, and bronze into the slot that does not set the password.2.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..