... Video Door Phone 1.Time Attendance,Unlock by password,card,button 2.Intercom, call other monitors,surveillance outsid Product name: Super Thin 7 Inch ... Color Video Door PhoneItem No.: LL-274Specifications: 1. Super ... plastic camera2. CMOS camera, handfree, audio and video communication.3. Unlock, intercom, call other monitors, surveillance outside4 ...