... hand operation both USB & RS232 port l SAW touch screen panel technical specificationTechnologySurface Acoustic Wave(SAW) Sizes8.4” to 26” Controller ... 7Multi-Point TouchIntelligent discrimination by softwareOperating TemperatureTouch Panel-20°C to +60°CStorage TemperatureTouch Panel-40°C to +70°CHumidity10%-90% ... XP, Windows NT, MAC, LinuxAgency ApprovalUL, CE, FCC, RoHS , CB 15 inch touch screen