32inch SAW touch screen 4,096 x 4,096 Z axis 256 ... hand operation both USB & RS232 port l SAW touch screen panel technical specificationTechnologySurface Acoustic Wave(SAW) Sizes8.4” to 26” Controller Interface ... , Windows NT, MAC, LinuxAgency ApprovalUL, CE, FCC, RoHS , CB 32inch SAW touch screen 32inch touch panel