The Extech DL150 is a True RMS AC Voltage and Current Data Logger. Data log up to 100,000 readings of TRMS AC Voltage (600 Volt) or Current (200 Amp) with a user programmable sample rate from 1 second to 24 hours. LCD displays time/date, current reading, min/max, and if the user settable high/low alarms have been exceeded. Readings can be downloaded to your PC via the USB interface. Featuring normal, peak, and capture (user specified trigger level) recording modes. Complete with current clamp, test leads, alligator clips, software, USB cable, 110-Volt AC Adapter, and four AAA batteries.