4-wires color video hands-free or handset kit, wall mounted with internal power supply, expandable up to 4 additional Internal Units and up to 1 additional External Panel or an External Camera (NTSC or PAL), offering the following functions: call, intercom, door lock activation, image cycling. Composed of a hands-free or a handset Video Internal Unit, with a 7” colour display and 12 ringtones, signaling LED and MUTE function; and a discrete Entrance Panel, with microphone and speaker volume adjustments, colour camera and LED for enhancing lighting in the visual field.