Supco LCV LOGiT Datalogger for Voltage and Current is a small and economical data logger recorder which will measure external voltage and corrent on single phase systems. Supco LCV LOGiT Datalogger for Voltage and Current allows exporting files to excel or text, has a sample rate that is selectable, and can be combined with 2 other LCV units for 3 phase measurements. Made in the US.