2 wires - X1 System single-house video entry kit, color Perla ice white series with recessed THANGRAM. Composed of: PEV BI 3,5" color video receiver, ice white color, DVC/01 ME entry panel with wall or recessed mounting complete with DPF NF Black color decor panel, DPS single button, 3 DTS ME single covers, DSI embedding box, DCI ME frame, VA/01 power supply.