... severe environments 3.Stable, no-drif 2,4,6,10,16,32 points 32/42/52/55/65 ... Free of false touch reportsElectricalOperation VoltageTypical +DC 5V, +4.75V to +5.25VPower SupplySize under 52”(include ... air / 8 kV contact discharges (EN61000-4-2,1995 :Level 4)ControllerIntegration inside touch panelAgency ApprovalsCE, FCC, RohsOperating ... Dos / Windows 7/XP//Mac OS 2,4,6,10,16,32 points 32/42/52/55/65 inch ...