Check the listing for details. Enhanced Functionality PH Sensor Kit for Arduino with Quality Components. Condition: New. Listed at 19.09 USD. Wide detection range: The PH Sensor for Arduino can detect a wide concentration range from PH0 to PH14, allowing for versatile use in various applications. Component power: ≤0.5W. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.