The ILT570VIS Mini Spectroradiometric Measurement Systems are ideal for testing and measurement of visible light sources. We offer seven options for measuring light sources from 350 nm to 800 nm. Each Spectroradiometer System includes our visible mini spectrometer and optical fiber, an optical measurement head for spectral irradiance, spectral radiance, or spectral flux, a stand, SpectrILight III control software & DLLs, and a carry and storage case.