... to 85-inch.2. Second, the effect chart 3. Third, the basic characteristics Touch media: finger, pen and any opaque objectsUSB output ... within the light guide bar, AA outside the touch action can be set;3.OTP can be waterproof and dustproof, structural design ... the touch area, self-assembly, commissioning ;5, support WIN7 / 8, Android2.3.6/4.0 7. Seven, structure size OTP Optical touch screen OTP ...