... scratch-free,hand or glove hand operation both USB & RS232 port l SAW touch screen panel technical specificationTechnologySurface Acoustic Wave(SAW) Sizes8.4” ... or 12V±2V for KCA-UR01H-R1DWorking Current80mA for 12V controller 70mA for 5V controllerMaximum Current100mA for 12V controller 90mA for 5V controllerResolution4096*4096 ... NT, MAC, LinuxAgency ApprovalUL, CE, FCC, RoHS , CB 15 inch touch screen