The 2400 Series SourceMeter (SMU) instruments are single-channel voltage/current sources and measurement devices. Each 2400 Series SMU instrument is tightly integrated with a highly stable DC power supply and a true instrument-grade 6½-digit multimeter (with a measurement range of 1100V to 100nV and 10.5A pulses to 1pA). Alternative options in the 2400 series include the 2400 Graphical Series SourceMeter SMU instruments with touchscreen operation, as well as the 2600B series single-channel and dual-channel SMU instruments.