The CompactSpec® II of tec5 is a fast and robust UV-VIS-NIR spectrometer system for process use, integrated in a stainless steel housing (IP54) with an IPC system of the A15-series. The system is available for various spectral ranges and resolutions. The built-in spectrometer modules are high-performance optical components with high reliability, long term stability, and no moving parts. Fast, robust multiplexer technology allows for the measurement of up to 8 channels without losing speed and stability.