[5 in 1 Smart Door Lock] 5 unlock ways : Fingerprint + Passcode + IC Cards + APP Control + Physical Keys. Fingerprint door lock support remotely unlock and work with Alexa/Google Assistant support voice control (Need to pair with gateway, sold separately) | [Remote Control / WiFi Access]Paired the keyless entry door lock with Harfo wi-fi Gateway (sold separately), you can lock/unlock your keyless entry door lock anytime anywhere, you can set up codes remotely and check access records. | [Easy to Install] No extra drills needed and no locksmith needed. The fingerprint lock is super easy to install in minutes with just a phillips screwdriver. Reversible door handle is suitable for both left or right handed doors. Door thickness range: 1 3/8 inch to 2 3/16 inch 35mm-55mm thick. | [Security Function Keyless Lock] Auto-Lock, Anti-peep & Private Mode Function door locks with keypads will be safer for your home. You can authorize multiple administrators, and generate permanent, one-time, or customized passcode for friends, guests, housekeepers. | [300 Users & Double Assurance] 300 Users capacity include fingerprint ,passcode, Ic card. If the lock's battery runs out, you can use backup key to unlock the lock. Also there is a emergency usb port under the lock, we can use a power bank to charge the lock only as a tempory power supply then we can unlock the lock.