interactive whiteboard for classroom use. Such functions fully mobilize the subjective initiative of the students, so that students actively participate in the classroom teaching, active classroom atmosphere, improve the learning effect; through the black screen, network management and u disk control, the classroom order is well maintained.. 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.