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Capacitive sensors
Capacitive sensors are devices that detect changes in capacitance, which is the ability of an object or material to store an electrical charge. These sensors are widely used in various applications for proximity detection, touch sensing, and level sensing, among other uses. Unlike other types of sensors, capacitive sensors can detect the presence or absence of an object without needing physical contact.
How Capacitive Sensors Work:
Capacitive sensors work by creating an electric field, typically between two conductive electrodes, and measuring the variation in capacitance that occurs when a conductive or dielectric material (such as the human body) enters the field.