UPGRADED VERSION OF DP10013: Micsig DP20003 is the latest upgraded version of DP10013. With powerful maximum differential test voltage( DC + Peak AC) up to 5600V, it will be a great helper for your measuring project. PORTABLE: With portable and simple design, you can take the DP20003 to work anywhere with the small package box. Power supply USB DC 5V output, more portable while oscilloscope has USB interface. APPLICATION: Designed for the measurement of high voltage differential signal, to meet the demand for floating measurement. PRECISE SIGNAL: With stable physical properties and high quality plug-in cards, you will get a accurate signal. But please note that a calibration is needed when a substantial change in temperature or other circumstances affect the accuracy of the probe's zero point. You can short the input terminals of the probe, then power the probe while simultaneously pressing the 200X and 2000X keys for 3 seconds. WARRANTY: SainSmart is a trusted vendor, we offer a 1-year manufacturer's warranty on all parts. Please buy with confidence, and feel free to contact us if you have any problem.