digital board for classroom. The normal blackboard size, working under the support of computer hardware and software , has the functions of ordinary whiteboard and networked multimedia computer , and can realize ordinary whiteboard function and computer function, as well as software and hardware functions and educational resources, as well as electronic interaction between human and human. Induction panel.. 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.