... Second, the effect chart 3. Third, the basic characteristics Touch media: finger, pen and any opaque objectsUSB output resolution: ... 2.7mmX4mmInfrared lamp power 100mA, launch angle of 30°Wire capacitance value is 40pf / mGlass (non-standard)steel processing, thickness ... touch area, self-assembly, commissioning ;5, support WIN7 / 8, Android2.3.6/4.0 7. Seven, structure size OTP Optical touch screen ...