magnetic whiteboard sizes. The fundamental starting point and ultimate goal, therefore, must first abide by the principles of education and service. Under this premise, we must also consider systemic, technical, interactive, and timeliness.. 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.