The multi::lyserTM IV is an IoT-enabled UV-Vis spectrometry probe designed for analyzing wastewater, surface water, and drinking water parameters, operating within a wavelength range of 190-750 nm. It features an 8 GB onboard memory, fast measurement intervals every 10 seconds, and automatic cleaning capabilities, ensuring long-term stability and maintenance-free operation. It offers configurable digital interfaces and precise measurement of multiple parameters, with factory calibration and options for local multi-point calibration.