tecSaaS from tec5 is a modular platform based on UV/vis/NIR spectroscopy for implementing stand-alone sensors with embedded processing for industrial or mobile applications. The on-board processing architecture with modular software/firmware processes the data of UV/vis/NIR spectral sensors in real time and only passes relevant results to the process interface. Complex algorithms such as chemometrics or FFT can be used for data evaluation and customised mathematical processing can be defined using the integrated formula parser. For monitoring and parameterisation, PC software and an Android App are available.