interactive whiteboard 2mm high precision floor projection interact wall turn any wall, LED, LCD into touchable screen with 22 effects throwing games

Turn any projection flat surface to interactive whiteboard,including walls,soft projection screen,whiteboard.No WiFi required,Use the included interactive pen to annotate and draw remotely. Support 40inches-150inches board area,the Signal Receiver tracks the position of Interactive Pen,you can teach,share and present in a dynamic,multimedia way. Works with all projector,this smart gadget is not affected by the type of projector you use.So simply place signal receiver on the top of a projector(desktop or ceiling),and you are good to go. plug the signal receiver into your computer's USB port,and then points appear on the screen,click them one by one,after all points confirmed,the position calibration is completed Can be transported between classrooms,shared with teachers,or even slipped back into travel bag for remote seminars and presentation..syi