The advanced and convenient smart door handle has 3 unlocking methods: fingerprint unlocking, app control unlocking, emergency spare key, making entry and exit more convenient. Fingerprint door handle door lock can be easily installed with a screwdriver fits most doors which thickness is 32mm/1.25inch-48mm/1.89inch, easily replaces existing door locks. Provide detailed installation steps and Install cutting template. Unlike other ball locks on the market that are easy to slip when being used, this lock with curved handle design is convenient for unlocking even in rainy and snowy weather.