... frame, and other 3 sides frame strips reflect the light from CCD lens and make an optical network on the surface ... is widely used for information kiosks, digital signage, interactive whiteboard, computer, touch TV, training and education, commend centers, board rooms, ... , contact discharge 8 kV, air discharge 15 kV on USB connector pinsEMCCE,FCC Class B,EN55022,EN55024,CISPR22,CISPR24InterfaceUSB 1.1 ...