seeed studio Grove GSR(Galvanic Skin Response) Sensor Module This module stands for galvanic skin response and it is a method of measuring the electrical conductance of the skin. It can be used to reflect the human emotional activity. When people are emotionally stressed or have strong expressions on the face, sympathetic activity increases and promotes the secretion of sweat glands, which increases the skin's electrical conductivity. It allows you to spot such strong emotions by simply attaching two electrodes to two fingers on one hand. In some galvanic skin response devices such as lie detectors, this scientific principle is also applied. Tech SupportVisit >>Seeed Wiki Note This device is not a medical device.SPECIFICATIONS Weight 29g Interface Analog Operating Power 3.3V.5V Sensor finger straps for electrodes Dimensions 20 x 20mm Various Main Boards Support Arduino.Seeeduino.Raspberry Pi.BeagleBone.LinkIt ONEPART LIST 1 x seeed studio Grove GSR Sensor Module 1 x Grove Cable(26AWG)