Feature:1. Multiple unlocking methods: fingerprint + anti-peep virtual password + physical key (including 2 pieces).2. One-touch fingerprint access, fingerprint read and door unlock. It can automatically relock the door for you and increase the security of your home.3. with backup power interface and backup key. When the power is critically low or the battery is completely empty, you can use the key to open the door, and the micro USB power bank can also be a temporary power supply.4. It has a wide range of applications that can replace standard single cylinder US door locks, both left and right, inside and outside.Application: Home,Office,Apartment, Department Specification:Item Type: Smart LockMaterial: zinc alloyFunction: fingerprint + key + electronic passwordPower supply: 4 x AAA dry batteries (not included)Installation: It can be installed on your door in about 5 minutes with a screwdriver.Application: It can replace the American standard single cylinder door lock, suitable for left and right opening doors.Applicable Door Thickness: Approx. 30-55mm / 1.2-2.2in.NOTE: MOBILE POWER SUPPLY IS NOT INCLUDED!!!