The industrial power meter has beautiful appearance, small volume, light weight and easy installation. It has many functions of anti theft, it has small starting current, no latency, wide load and low power consumption. The error curve is straight, and it has good stability in long run. It has high accuracy for it is electronic design, built in import special chip, precision won't be affected by frequency, temperature, voltage and high order harmonic. It has long life for it use SMT technology and optimized circuit design, the whole machine does not need to adjust the circuit after leaving the factory. Low power consumption design is adopted to reduce line loss. IC card transmission data to realize data back reading, it include: reading the total quantity of electricity, the remaining quantity of electricity, the accumulative quantity of electricity in the table, the number of purchasing power and so on. It has overload alarm, residual power alarm, remind users to buy electricity in time.