interactive whiteboard for teaching english. IQAio GR511 highly integrated multi-point infrared interactive whiteboard, central control system, wireless microphone, stereo amplifier system, OPS and other equipment. It adopts capacitive touch button, scan RFID card to power on/off device and front button indicator to show the status of teaching operations. It improves the operation experience and very easy to use. . 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.