High Security: Sensitive password keys, easy to operate, users can set 111 nonrepeat password combinations, greatly improve the security of mechanical door locks. Mechanical coded lock, does not require power supply, bring much convenience for youKeyless Entry Door Lock: Mechanical coded door lock does not require a key and a door card, just enter the mechanical code to unlock it, and you can change the code at any time, enjoy the convenience and peace of mind with keyless entry and exitEasy to Set Up: Reset function, when the password is entered incorrectly, please press the C key first, and then enter the correct password to unlock. No need to enter passwords in order. For example, if the password is "Y123", the user can also press "123Y" to unlockDurable Material: Keyless Mechanical Combination Door Lock adopts highquality zinc alloy shell with chromeplated and the surface is electroplated to effectively resist severe damage. Comes with screw package, easy to installWide Application: Keyless Entry Door Lock is suitable for sliding doors in kitchens, balconies, office doors, workshops, interior doors, rental doors, composite doors or any place where keys are not suitable, provides you with a safer living environment