User`s manual

Appendix A Touchscreen Driver Installation 17
Optical
• Visible light transmission: 72% (typical)
• Reflection: > 25% @ 550 nm
Sensor board
• Chemical strengthened glass meets “4H” hardness standard
(Test condition: ASTM D3363-92A)
Ball drop test
• Touchscreen can withstand a 225 g steel ball dropped from a
height of 660 mm, without breaking
Environmental
• Operating pressure: 30 ~ 45 grams for finger; 10 grams
for stylus pen
• Operating temperature: 0 ~ 50° C (humidity 20 ~ 90%
RH)
• Storage temperature: -25 ~ 70° C (humidity 20 ~ 95%
RH)