... commend centers, board rooms, etc. Features: Support multi-touch by pen, finger, and other opaque object.Faster response and higher ... cableTouch technologyOptical imaging (no special surface coatings)Touch methodFinger, glove hand, pen, any other pointer or opaque object Stylus ... 2 year parts and technical support Optical multi-touch by finger, normal pen and other object (30inch -110inch size)