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The module is a PH sensor, which can be used to test the PH value of the aqueous solution. The electrode of the Crowtail PH sensor is a composite electrode composed of a glass electrode and a reference electrode.
It is widely used in environmental monitoring, chemical industry, pharmaceutical industry, dyestuff industry, universities, and research institutions in the situation of detection of the pH of an aqueous solution.
The plastic barrier protection of the fragile part of the electrode can’t be broken and can not be used as a string rod when measuring.
The electrode is a full-screen type to prevent interference of external electric field when measuring.
Choose the analog pin of Arduino as the LED control mode.