Electrode Connection
The electrodes are connected as follows selon the Desired Configuration.
In two electrodes : Two working electrodes and a counter electrode.
In three electrodes : Two working electrodes, a counter electrode and a reference electrode (as in the diagram, below).
In 4 electrodes : Two working electrodes, a counter electrode and two reference electrodes
In all cases , the two connectors GND must be connected together, using a Banana Banana cable.