AP204-R repeater panel is a device specially designed for Solution 2. Data is exchanged between the panel and the repeater panel by RS485 communication. Thus, AP204-R Repeater panel can receive data from the main panel and display it on the LCD screen, and transfer the changes made in the menu to the main panel. It possesses the same control functions as the main panel and features a slim and stylish design, making it suitable for use in visible places.