Keyless Entry Door Lock: Unlock your door can be much easier than fumbling with a key when your arms are full of groceries, keypad lock provides easy key free access to your house using your fingerprints or using an illuminated highly responsive keypad, optional mechanical key override lock is available as an extra backup. Simple DIY Installation: No costly locksmith is required, includes necessary hardware components(a Phillips head screwdriver) and a detailed manual, you will be able to install and program this electronic digital door lock by yourself, battery powered by 4 AA batteries(not provided), no App and hub required.