82" 4:3 Infrared Interactive Whiteboard Interactive Teaching System with 2 Points Touch

82" 4:3 Infrared Interactive Whiteboard Interactive Teaching System with 2 Points Touch Along with the development of infrared technology, interactive whiteboard has been the most popular part of interactive teaching system. Using with any normal projector, throwing the contents of the computer into the whiteboard, using fingers/pens to touch/write on the board, making comments/notes, save the files. Thus the teacher does not need to use keyboards to type the words any more.