VOICE CONTROL & ATUO LOCK - With Wi-Fi Bridge to remotely lock/unlock and monitor, your door as well to integrate with Alexa to enable Voice Control. And it ALSO can link with Smart Watches. With the automatic locking function (5-120s, Customize), no worry about forgetting to lock the door. ANTI-PEEPING, ANTI-THEFT - You only need to enter your correct password continuously. Before and after the correct password, you can enter numbers randomly to prevent outsiders from knowing your specific password. And after a long time, there will be no traces of fingerprints on the correct password. HOME SECURITY MONITOR DOOR LOCK - Bluetooth/Wifi Electronic deadbolt lock, App Sign in APP of Bluetooth Locks for Front Door, you could check the records about unlocking and wrong passcode in real time. For security reason, it will automatically lock for 5 minutes when enter the password incorrectly more than 5 times. EASY TO INSTALL KEYLESS ENTRY DOOR LOCK - Installation with just a screwdriver in minutes, no hard wiring required. Lock and unlock with Smartphone, Voice, Keypad, and Mechanical Key. You can generate Timed, Permanent, One-time or Customized encode for guests, visitors, housekeepers or employees. SMART REMINDER - When the smart lock keyless lock in low battery, Smart Locks will alarm, or you can check the battery level in the APP. You could temporary charging your keyless door lock by using a 9V battery. Give your room/home lasting security protection.