Industrielles pH-Messgerät Modul PH-Detektor Sensor Analogsensor 5V für Arduino
34,62 €
(3) insert the pH electrode into the standard solution with a pH value of 7.00, or directly short-circuit the two inputs of BNC interface, open the serial port monitor of Arduino IDE, and you can see the current printed pH value, and the error will not exceed 0.3.
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