touch whiteboard.The surrounding reflection, refraction, and interference. The infrared transmitting tube has an emission angle, and the receiving tube has a wide range of receiving angles. If the surrounding reflection reaches a certain level, you will find that your finger cannot block the signal anywhere.

touch whiteboard.The surrounding reflection, refraction, and interference. The infrared transmitting tube has an emission angle, and the receiving tube has a wide range of receiving angles. If the surrounding reflection reaches a certain level, you will find that your finger cannot block the signal anywhere. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.