whiteboard manufacturers usa. high. It is not possible to integrate all the functional modules together, and different modules need to be installed separately. 2 need integrated wiring. Due to the lack of integration and decentralized structure, there is a connection between all the distributed devices, and the overall connection operation needs to be realized through the integrated wiring engineering. 3 installation is complicated. All decentralized equipment needs to be installed separately, wall-mounted, floor-standing, and relatively complicated to install. 4 application flexibility is lacking. The traditional mode of interaction uses whiteboard touch technology. The user can only operate in front of the display screen, and the use is limited, which can not meet the requirements of interactive teaching in mobile mode.. 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.