Perfect for Board Rooms, Class Rooms and small conferences where speedy audience interactivity, audience responses or audience feedback is essential.QNA is an inexpensive system which controls PowerPoint presentations and allows programmed or 'Buzz in' questions to be added on the fly and voted on with instant projected answers.The QNA teacher's unit also has a built in laser pointer.For information or a free trial of QNA XPRESS Audience Response Voting Systems please visit bramshaw.com.au and click on QNA.