GSR Skin Current Sensor V2.0
The GSR (Galvanic Skin Response) Skin Current Sensor V2.0 is an electronic sensor module designed to measure small variations in the electrical conductance of human skin. It is commonly used with microcontrollers such as Arduino and operates on a low voltage supply, typically between 3–5 V. These variations in skin conductance are often associated with physiological responses such as emotional arousal, stress, or changes in mental state, making the sensor useful for biofeedback and experimental applications.

Product Description
This sensor module is built to detect subtle changes in skin conductance in a safe and non-invasive manner. It provides an electrical output that can be easily read and processed by a microcontroller for further analysis or display. The module is suitable for both educational and experimental use, offering stable performance and reliable signal output. Its compatibility with common development boards makes it accessible for students, hobbyists, and researchers working on human-interaction or health-related projects.

Working Principle
The GSR sensor works by applying a very small and safe voltage across the skin using external electrodes. As skin moisture and sweat levels change, the electrical conductance of the skin also changes. The sensor detects these variations in current flow and converts them into a corresponding electrical signal. This signal can then be interpreted by a microcontroller to represent changes in physiological or emotional states.

Key Features
The module is compatible with operating voltages in the 3–5 V range, ensuring easy integration with popular microcontroller platforms. It provides an analog or digital output that reflects changes in skin conductance. The sensor is designed for simple interfacing with Arduino and similar boards, requiring minimal external components. It delivers stable and consistent readings, making it suitable for biofeedback and experimental measurement applications.

Applications
The GSR Skin Current Sensor V2.0 is widely used in biofeedback and physiological monitoring projects to study human responses. It is suitable for stress and emotion detection systems in experimental or educational setups. The sensor can be integrated into wearable electronics and health tracking prototypes. It is also used as a tool in behavioral research and psychology-related studies, as well as in interactive art installations and user interface experiments that respond to human emotional input.