... by built-in MCU, displays by two LED screens each with four digits. One displays wavelength value, the other displays ... /mmWavelength Range 335nm - 1000nmWavelength Accuracy±2nmWavelength Repeatability 1nmDisplay Mode LED displays T, A, F, C, λStray Light ... Output USB, digital output,Sample Holder 10mm-50mm adjustable, four positionDetectorSilicon PhotodiodeLight Source Tungsten lamp (socket type, 20W ...