advantages of using an interactive whiteboard in the classroom. In recent years, with the development of educational informatization, network-based audio, video recording, on-demand broadcasting, and live broadcasting have become learning.. The IQAio GR519 is an upgraded lightweight version based on the original IQAio GR511. The original dual-cavity structure was changed to a bottom-edge structure, so that the minimalist design accommodates modern classrooms and conference rooms. With one IQProjector V2 and one IQView E3821, you can achieve flexible and intelligent classroom.