digital electronic whiteboard. With the advancement of technology, the pressure-sensitive electronic whiteboard is inaccurately positioned, and the use of the pressure-sensitive electronic whiteboard is inevitable. Electromagnetic electronic whiteboard has improved the problem of inaccurate positioning of pressure sensing technology. It was once popular in the market, but because manual touch is not possible, special pens are needed, and consumables are used. With the development of new technologies, electromagnetic whiteboards are also Gradually eliminated and replaced by new technologies.. 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.