The GSR Sensor from Seeed Studio is an affordable, low-cost electrodermal activity (EDA) device. It measures the resistance of the skin to small electrical current, which changes in response to emotions such as stress, excitement, fear, and relaxation. The GSR Sensor is based on the Maxim MAX30102 electordesal activity (EDA) system-on-chip solution that includes a temperature sensor and thermistor to measure skin temperature. This device can be used for experiments in biofeedback, psychology, and emotion recognition applications, and provides a digital output for easy monitoring and data collection. The GSR Sensor is a convenient, low-cost solution for any project requiring electrodermal activity (EDA) sensing.