About This Keyless entry system, Face scan or password/Fob make it easy to open the door. Easy Install and wire, Provide Detail video instruction and On-line support for any question, Can check wire video before purchase. WiFi Face Recognition Metal Access Control Device, Waterproof out door/in door install, conforms to IP66 Grade. Multiple Access Modes: Face scan,Smartphone APP, Card or key fob, PIN Code, completely running stand alone. Has a door bell button. Has backlight work indicating light, very convenient to use even at dark/evening. Support remote management, The smart Phone App can remote open door, Remotely ADD/Delete User, Can check detail history records even in another city(record of Who open door at what time). Can make door schedule Auto Open / KEEP OPEN at business hour, and Lock back at off-duty time automatically. Also support one time temperary password. Good quality ensures 24/7 reliability, Ensures encrypted storage and secure data management to protect user information. Suitable for both residential and commercial use. Overview Brand : MENGQI-CONTROL Power Source : Corded Electric Item dimensions L x W x H : 10.5 x 7 x 4.9 inches Connectivity Technology : Wired Voltage : 110 Volts