The Extech 382100 is a 3-Phase Power Analyzer/Datalogger that stores data (up to 30,000 measurement sets) on an SD card in Excel format for easy transfer to your computer. It performs a comprehensive system analysis with up to 35 parameters, including V (phase-to-phase), V (phase-to-ground), A (phase-to-ground), KW / KVA / KVAR / PF (phase), KW / KVA / KVAR / PF (system), KWH / KVAH / KVARH / PFH (system), and Phase Angle. The readings are presented on a big, dot matrix, backlit LCD that can be viewed in the sun. It includes three current clamps, four voltage leads with alligator clips, eight AA batteries, an SD memory card, a universal AC adapter (100-240 V), a casing, and a user handbook.