Smart Fingerprint Door Lock-High Security and Durability Lock For Your Door！No one gadget will improve your day-to-day life more than a smart lock！ Advanced 3D Fingerprint Sensor Unlock —— For all people Smartphone APP Access Unlock —— For general situations Temporary Password —— For visitors Anti-peep Passcode Unlock —— For the aged & kid Mechanical Key Backup Unlock —— For emergency ( with 2 keys) Power Supply: 4pcs AAA alkaline batteries （not included） Battery operated & External Power Suitable for Left/Right-Handed doors Read more What can TT Lock APP do? key-sharing YRHAND smart locks let you create permanent or temporary entry codes for visiting guests, cleaning services, dog walkers, repair services, and every individual member of your family. It’s also a boon for Airbnb owners, who can make your entry to a rental a snap. See a log of who’s entered and when Log record will show you who has accessed your door and which method they used (fingerprint, password, or smartphone) from your smartphone. Allowing you to keep an eye on your home even when you’re not physically there. Intelligent Attendance. Employee attendance information is transmitted to management backstage in real time. Once the employee leaving office, the key is deleted in one second. Security and control from anywhere Paired with WiFi Gateway (Optional add-on,sold separately,Asin:B097GK9TKC),remotely lock and unlock your door and set up codes or simply check status from anywhere using the mobile app. It can use voice control via hub that will compatible with Amazon Alexa and Google Home,smart watch devices,ect. Read more System Introduction Bluetooth: Unlock by TTLock App Power Supply 4 AAA batteries Fingerprint type : Semiconductor embedded fingerprint Button type : Capacitive touch button Passage Mode when you need to open/close the doors frequently Low battery alarm when the voltage is lower than 4.8V, the alarm is activated each time with the unlock Secure Lock Mode Except for the administrator, any other users can not unlock the door Scramble code function It supports front and back dummy passcodes to prevent from peeking Access records query You can check access records at anytime by TTLOCK App USB emergency interface You can charge the lock to unlock the door when the battery run out. (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.when('AplusModules-module-16-tech-specs').execute(function(resizeSpecTables) { resizeSpecTables('aplus-index-3', 'aplus-tech-spec-table', 'aplus-tech-spec-hide-loading'); }); }));