... 1. 7'' TFT monitor door phone 2. CCD camera,handfree,audio and video communication 3. Unlock, intercom, call other monitors CCD ... Camera,Handfree,Audio And Video Communication Door Phone Feature:1. 7'' TFT monitor ... . 2. CCD camera,handfree,audio and video communication. 3. Unlock, intercom, call other monitors, ...