Product name: Punch-free security lockMaterial: ABS materialSize:As photograph showColor: Black, WhiteApplication: doors and windows/refrigerator/cabinetPacking Included: 1PC lock Six product advantagesAnti-theftAnti-fallingPosition managed ventilationProtect childrenAnti-corrosion and anti-rustDurablePassword setting1. Get the password lock is mostly the initial password, the initial password 0000. Press the free up key, you would pull out the metal rope.2. When changing the password, the rope must be inserted within the lock, (otherwise the most important can not pop up, the password can't be modified)3. With a toothpick, put the tail of the rotating shaft into the lock (don't let go) and point the password you like at the protruding dot in the middle of the number.4. Check whether the numbers are aligned, regulate and press the open key, in the paste installation can be. (Note: Don't forget the password you set, there's no common key to open.) Applicable wall surface: appropriate for soft and difficult planes, stable tender wooden boards, painted boards, marble boards, glass boards, PVC boards, acrylic boards, steel panels, delicate ceramic tilesNot relevant to the ensuing panels: Textured wooden boards, mosaics, bumpy tiles, cement partitions and different non-smooth surfaces are not applicable...*Note: This product is just an auxiliary tool, and can't take where of folks to take care of the children. Please test whether there is any looseness regularly! Thank you for your understanding.