The 6000 Series of stimulators are ideal units for conducting teaching and research experiments. The range, which consists of the 6002 Basic Stimulator, 6012 Dual Pulse Stimulator and the 6020 Dual Impedance Stimulator, have been designed specifically to allow complete compatibility between all 6000 series stimulators. This allows two or more systems to be connected together to make a sophisticated multi channel system.