... with PC software. Characteristics and functions of the instrument: 1. Double- beam optical system. 2. The Main unit and PC ... 200%T,-0.3-3A,0-9999CWavelength setting modeAutomaticScanning speed——HI,MED,LOW OptionalOutputUSB PortPrinter PortParallel PortDisplayGraphic LCD(128*64dots) ... 460*380*180420*300*160460*380*180625*430*210Weight15kg13kg20kg28kg Double beam UV VIS Visible Spectrophotometer Black09