[Superior Sturdiness & Security] Made of solid zinc alloy material, the Blusafe smart lock ensures the highest quality and durability to prevent any possibility of forced unlocking. An alarm can be triggered to scare away suspicious people when being forced to unlock or attacked. The smart lock locks automatically when the door is closed, no need for manual operation or setting. With no risk of invasion, enjoy your peace of mind even if you are not at home. [Remote Control with Doorbell Camera] The smart door lock will take a photo and send a notification to your phone immediately when someone rings the doorbell. You can send a one-time password or slide to unlock the door in the App. Note 1> the remote unlock function is passively triggered by ringing the doorbell on the smart lock, 2> the camera has no video calling or recording functions, 3> incompatible with smart homes such as Alexa and Google Assistant [Bank-Level Secure Biometric Fingerprint Sensor] Adopting an advanced 3D biometric-based fingerprint sensor, the Blusafe fingerprint door lock ensures bank-level security for your home. Unlike optical fingerprints, the fingerprint door lock accurately identifies your fingerprint within 0.5s, with a resolution of up to 508dpi, avoiding unlocking by copied fingerprints. With a capacity of up to 100 fingerprints, you can easily share with your family, friends, dog walkers, housekeepers, etc. [Long Run Time & Emergency Charge] Designed with a hidden touch keypad, the WiFi smart door lock has a lower consumption, and the required 8 AA batteries (not included) can provide at least 6 months of operation. A low-power voice prompt will be activated when the battery is below 20%. When out of power, the WiFi smart door lock remains locked and supports emergency power supply via USB port. *Run time depends on the frequency of use and the quality of the battery. [Easy Setup for Right & Left Door] The keyless entry door lock with handle fits both right & left-handed doors, and can be easily installed with the screwdriver, without hiring an expensive installer. The keyless entry door lock with handle fits most standard residential doors with thicknesses from 1-2/5" to 2-1/8" (35 and 54mm), backset: 2-3/8" or 2-3/4" (60mm or 70 mm). When you know who is at the door, you can remotely open the door for him even when you are not at home. Note: the remote unlock function is passively triggered by ringing the doorbell on the smart lock. Fingerprint: Your finger is your key, it can accommodate up to 100 fingerprints Passcode: Unlike the button keyboard, the hidden keyboard is not easy to wear and tear, effectively protecting your password. it can accommodate up to 100 passcodes. RFID Keycard&Mechanical Key: Traditional solution for emergency.( 2 RFID keycards and 3 mechanical keys are included.)