BenQ PointWrite PW21U Quick Start Manual page 3

Instructions for surface
Optimal interactive quality will be dependent on the selected surface condition.
It is important to choose a flat and non-reflective surface to secure the writing
performance.
Comparison of the board surface
Surface
Semi glossy/Matt
Glossy
Boardmaterial
Dry erase board
•General whiteboard
•With Galvanized steel
•With Ceramic steel panel
Semi-gloss surface
Glossy surface
Glossy surface will increase the
external light intensity and
interference may happen.
Non-smooth surface
or with protruding object on the
surface.
Performance
Best!
The surface will eliminate
reflection intensity.
Risk!
Interference may happen
during writing.