... .Stable, no-drif 2,4,6,10,16,32 points 32/42/52/55/65 inch multi ... 52”(include 52”)USB or PS/2 Interface, power ripple max.200mV rmsSize above 52”(52” not included): external AC-DC power adaptorInterfaceFull Duplex USB 2.0 ... kV air / 8 kV contact discharges (EN61000-4-2,1995 :Level 4)ControllerIntegration inside touch panelAgency ApprovalsCE, ... 7/XP//Mac OS 2,4,6,10,16,32 points 32/42/52/55/65 inch multi ...