The water quality sensor is a device designed to detect and measure various parameters of water. It can monitor factors such as pH value, dissolved oxygen, turbidity, conductivity, and the concentration of specific ions or pollutants. These sensors play a crucial role in different fields. In environmental monitoring, they help assess the health of rivers, lakes, and oceans. In industrial processes, they ensure the quality of water used in manufacturing to prevent equipment damage and product defects. With advanced technology, water quality sensors provide accurate and real-time data, enabling prompt actions to be taken to maintain or improve water quality for both ecological and human-related activities.