digital whiteboard games. Source support. Digital campus construction needs to realize all digitization from the environment (including equipment, classrooms, etc.), resources (such as books, lectures, courseware, etc.) to activities (including teaching, learning, management, service, office, 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.