The Extech PQ3450-12-NIST 1200A 3-Phase Power Analyzer Kit comes with the PQ3450 3-Phase Power Analyzer/Datalogger, which is perfect for logging measurements and readings and keeping them for the user's analysis. The Extech PQ345012NIST performs analysis with up to 35 different parameters and is able to log up to 30,000 entries that are capable of being saved on an SD card and viewed in Microsoft Excel format.