“Light” applications are everywhere, as long as a place has humans, there will be a need for light. According to different fields of spectrometer users, UPRTEK had released the uSPECTRUM PC Software for larger screens and create more convenient viewing environment, which allows users to control the MK350 devices with USB connection for multiple measurements comparing, sorting and analyzing data. uSPECTRM is not only provides existing functions of MK350 devices, but also provides .dll libraries for users wishing to custom program for MK350 devices.