The Lafayette Finger Electrode Set has been designed for maximum efficiency and serviceability. On one end the 0.25″ (0.635 cm) plug connects the EDA Finger Electrode Set to the Data Acquisition System (DAS) Interface. The opposite end of the cable is bifurcated into two cable branches both ending with a simple pin jack. The two pin jacks connect to the two finger plates, which are then placed on the subject’s index and ring fingers of the right hand during a polygraph examination. The finger plates are made of stainless steel and are fitted with Velcro tape.