UV VIS Spectrophotometers SI-335 Microprocessor Single Beam UV VIS SpectrophotometerModel No.SI-335Wavelength190nm -1100nmSpectral Bandwidth1 nmWavelength Accuracy<=+ /0.1nm(656.1nmD2),<=+/0.3nm(full wavelength range)Wavelength settingAUTOkeyboardMembrane keypadDetectorSilicon PhotovoltaicInterfaceUSB Port and parallel port (Printer)PowerAC220V/50Hz or AC 110V/60Hz