．Accurately measures COD, TOC, turbidity, and temperature in real time without the use of chemical reagents, ensuring eco-friendly and efficient water quality monitoring. ．Equipped with a stable UV254 LED light source and optical filter, the sensor features automatic turbidity compensation and self-cleaning, minimizing external interference and biofouling for long-term stable operation. –Application areas– Freshwater and seawater aquaculture, wastewater treatment plants, reservoirs and lakes, drinking water plants, surface water, and marine monitoring.