Sensors Used in Agriculture A sensor is a device that can sense the measured information and transform it into an electrical signal or other required forms of information output according to a certain rule to meet the requirements of information transmission, processing, storage, display, recording, and control. With the development of the Internet of Things technology, sensors are gradually applied to more and more industries such as agriculture and industry. SOIL SENSOR Maintaining proper soil pH is the basic requirement for normal crop growth. When the Renke soil pH sensor detects the electrode (sensor) directly contacts the soil, the current generated by the oxidation-reduction reaction in the chemical reaction is used, and the current value will drive the data of different pH value units corresponding to the ammeter, which is converted by the host. The results are displayed in the form of numerical values