The 3166 CLAMP ON POWER HiTESTER provides clamp measurement of power lines from single-phase to three-phase four-wire circuits all, in a single unit. In addition to the basic measurements including voltage, current, power, power factor, and integrated values, it is also capable of measuring demand, important for power management, and harmonics (option). Data can be transferred to a computer using the RS-232C interface or optional 3.5-inch floppy disk drive. is Save data as text files for easy handling and analysis. Ideal for factory power supply maintenance, Model 3166 will be invaluable for improving where it is desired to improve energy-saving efficiency.