【6-digit Code Keyless Entry】Electronic deadbolt door lock supports multiple ways to access, With 9 Master Code; 91 User Code; one-time code (newly added); 2 backup keys. Provide different unlock methods for family, friends,cleaners and Airbnb guests 【Anti-Peeking Password】 Enter any number before and after the correct password (up to a maximum of 20 total password values) to prevent your password from being monitored or maliciously monitored, ensuring complete security 【Auto-Lock & One-touch Lock】Set up the front door lock to automatically lock after 2-9 seconds. Added the ability to permanently disable auto-lock. Keeping the door open. Also, use the "one-touch lock" feature to lock from the outside. 【Security Deadbolt Electronic Door Lock】Has emergency charging, 5 consecutive error code input restrictions and low battery alert, mute mode and passage mode, IP52 waterproof, go perfectly with both traditional and modern house, providing reliable home protection 【Easy to Install on Any Door】Our deadbolt smart lock is only suitable for 2-11/65 " (55 mm) door holes, and is not compatible with 38 mm door holes. MOUSETRO door lock can be installed in minutes with just a screwdriver and is suitable for both men and women.(Provide 4 free AA batteries) 【Customer Service】The keypad lock offers a 30 days of free after-sale and a 1-year free replacement, as well as lifetime troubleshooting and customer service support. Upon receiving the front door lock, we will send a follow-up email with instructions to ensure its proper functioning Please check if the size is suitable before purchasing!!! This model is optimized and upgraded to have a 6-digit passcode, with the addition of a one-time passcode and the ability to permanently disable auto-lock.