Skin Conductance (GSR) & Temperature (TMP) Combi Sensor for Q32Combi Sensor of Skin Conductance and Temperature The GSR Sensor measures sweat gland activity at the fingers or in the palm of the hand. Skin Conductance (SC) is also known as galvanic skin response (GSR) or electrodermal activity (EDA). The sensor comes with Ag AgCL velcro straps snap on electrodes, which can be used over 100 times. The electrodes are attached to the fingers of the non dominant hand. Skin conductance is expressed in micro Siemens.