... ,FCC,ISO,ROHS 5.suitable for multimedia room 2.4g wireless classroom whiteboard speakers strong point:This active speaker system is special ... ,and it is simple installation. You just hang it on whiteboard side,ok ,finish. Amplifier speaker/active speaker: it has inbuilt ... *110*53mm This model can make wireless,if you need,please show me when you place order ! 2.4g wireless classroom whiteboard speakers