7" Color Video Door Phone 1.Time Attendance,Unlock by password,card,button 2.Intercom, ... other monitors,surveillance outsid Product name: Super Thin 7 Inch Color Video Door PhoneItem No.: LL-274Specifications: 1. Super thin 7'' TFT ... . CMOS camera, handfree, audio and video communication.3. Unlock, intercom, call other monitors, surveillance outside4. 6 infrared LED lights, External power adaptor5 ...