us markerboard. about. According to the survey data, the multi-function wireless positioning whiteboard produced by Company A has the advantages of high resolution, good real-time, interactive operation, color writing, etc.. 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.