The IT9100 power meter provides the maximum input of 600 Vrms, 20 Arms, and 100 KHz bandwidth. It can easily be used to measure voltage, current, power, frequency, harmonics, and other parameters. Standard configuration of the IT9100 series includes USB, GPIB, RS232 and LAN communication interfaces and also interfaces for USB-based peripheral devices. Users can save measured parameters into the external storage medium. The basic voltage and current accuracy is 0.1%. Moreover, the power meter has rich integrating functions, such as the active power. It is widely applied in test of motors, household appliances, UPS, etc.