wired video door phone, video intercom, video system 7" LCD color screen: High definition, no radiation and low power consumpti video intercom wired video door phone, video intercom, video system7" LCD color screen: High definition, no ... oxidation.Hand-free talk8 different ring tones for optionAdjustable volumeAdjustable color and brightnessPC programmablePassword and/or Card entry optional1-4 ...