The eDoubler module is used to add an extra applied and measured voltage range to select instruments which have a higher compliance voltage. It is a module that is directly connected between the instrument and the cell cable.
It is compatible with the Vertex.One, sModule.20V, the Vertex.20V, and XP20 instruments. In these cases the applied/measured voltage range is increased to match the compliance voltage, i.e. ±20V.