... no-drif 2,4,6,10,16,32 points 32/42/52/55/65 inch multi touch screen overlay kit Forstec CompanyShenzhen ... arrays on two adjacent bezel edges of the PCB with photo sensors placed on the two opposite edges ... he/she can do so by interrupting the light beams with a physical object. Since every infrared LED is independent ... Linux/ Dos / Windows 7/XP//Mac OS 2,4,6,10,16,32 points 32/42/52/55/65 inch ...