In the name of God, the Most Gracious, the Most Merciful. Remember God and send blessings upon the noble Messenger (Muhammad ﷺ). Four color intercom door opening screens, Hyundai brand, made in South Korea, are available. They work normally. Only the screens are used and preserved. The price for all four is one thousand riyals. Also available is an external camera that connects to four screens and has four buttons, but I don't know its compatibility with these screens. It comes as an addition to the screens.