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MCU-6701 is a professional GSR galvanic skin response sensor module, used to detect human skin conductivity changes and EDA electrodermal activity signals. It provides analog voltage output and SPI digital output for flexible connection and data reading. The module supports 3.3V and 5V power supply, perfectly matching Arduino, ESP32, STM32 and other mainstream development boards. Small size and low power consumption, easy to embed into various electronic projects. Suitable for physiological signal measurement, stress mood monitoring, biofeedback research, school teaching experiments and maker DIY development.