touch screen Technical Specification1.CharacteristicsOutline Dimension1808mm(W)x1080mm(D)Touch Area72 inch (1640*902mm)Scale (Length : Width)16:9(optional)Induction TypeInfraredTouch PrecisenessNon-physical8192*8192Data PortUSB 2.0/Wireless RF2.4G/RS232(optional)USB Cable Length6mWarranty3 yearsWorking EnvironmentWorking under sunlight2. Electrical FeaturesConnector InterfaceUSB2.0Power SupplyUSBConsumption Current≤ 100mAWorking Temperature-5-60 (Temperature slope less than 25/Hr)Working Humidity30-80% noncondensingStorage Temperature-40-40(Temperature slope less than 25/Hr)Storage Humidity20-93% noncondensingESD CapabilityContact discharge voltage is 4KV,air discharge voltage is 8KV3. Software FeaturesDevice Driver Version #DL-USB2.0Scanning FormAuto Start, Always ScanningCursor Speed120 Dots/secondEasy Write SoftwareOptionalFirmwareOptionalVersion #Latest Available