... draw-line, rotate, zoom in/out 2.Withstands severe environments 3.Stable, no-drif 2,4,6,10,16,32 points 32/42 ... Protection15 kV air / 8 kV contact discharges (EN61000-4-2,1995 :Level 4)ControllerIntegration inside touch panelAgency ApprovalsCE, FCC, RohsOperating SystemOperation System ... Linux/ Dos / Windows 7/XP//Mac OS 2,4,6,10,16,32 points 32/42/52/55/65 ...