digital whiteboard tool. Featuresedit 1. Basic annotation and painting function, realize screen annotation on any computer interface, pen shape can choose ordinary pen, row pen and brush, etc., the color of the pen can be set arbitrarily, the tag content can be erased by electronic eraser at any time. Content can be saved and printed at any time;. 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.