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The **pH Sensor with Module** is a reliable and easy-to-use electronic system designed to measure the acidity or alkalinity of liquids in various applications. It typically consists of a pH probe and a signal conditioning module that converts weak analog signals into a stable output readable by microcontrollers such as Arduino and other development boards. This sensor is widely used in water quality monitoring, hydroponics, aquariums, environmental testing, and laboratory experiments. The probe is sensitive and capable of detecting small changes in hydrogen ion concentration, providing accurate pH readings when properly calibrated. With its simple interface, stable performance, and broad compatibility, the pH Sensor with Module is an essential tool for students, hobbyists, and engineers working on liquid analysis and smart environmental systems.