More Secure?The lock is made of aluminum as a material with high hardness and corrosion resistance, which can effectively prevent others from damaging the door lock from the outside and further ensure your home security. Easy to Use: This lock is compatible with most American standard doors and can be easily installed with just a screwdriver. It also comes with a simple app that allows you to enjoy a smart life by programming the lock effortlessly. Full App Control: Connect via Bluetooth, the lock can store 50 passwords and fingerprints and key fobs,and with a Wi-Fi gateway (sold separately),you can control the lock remotely anytime,anywhere. Unlock and Lock: 5-in-1 ways to unlock include APP, Password, Key Fob, Fingerprint, and Key. 3-in-1 ways to lock include Auto Lock, APP Lock, Long press the "? "button to lock. Satisfactory Service: With a 30-day money-back guarantee, 1-year product coverage, and lifetime after-sales support, if you have any questions, please feel free to contact us, and we'll respond promptly.