why use interactive whiteboards in the classroom. Moving parts, a single host consumes only 5W, consumes less energy than energy-saving bulbs, and the average power consumption of a single unit is generally more than 200w _, so the use of cloud terminals can save a lot of energy costs in schools, and the body It does not require fan cooling, no noise interference, low radiation, energy saving and environmental protection, and green health.. 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.