large marker board. High-end digital devices in the fields of practice, creative process, distance education, video conferencing, and telemedicine. Its emergence is a revolutionary breakthrough in the old teaching model of the "Trinity" of blackboards, chalks, and erasers that have followed hundreds of years. Through interactive whiteboards, you can truly face-to-face communication. Various information (labeling, description, illustration, modification, sound, etc.) can be written in your electronic lectures, directly calling documents, pictures, images, etc. Speech. The interactive whiteboard can also meet the needs of communication and communication in different places through the Internet , so that people in different parts of the world can behave in the same room.. 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.