BenQ PointWrite PT20 Schnellstartanleitung Seite 7

Touch Module Installation
100-150mm
50mm
50mm
The ambient light or directly sun light is possible to impact the screen size of
touch area or cause interference.
In this case, make screen size smaller or turn to pen mode with PointWrite pen
for better writing quality.
Center line of touch area
50mm
Tape
Touch module
Frame
Surface
Touch area