1, high reliability, low power consumption, long life, wide range, high precision;

2, time measurement positive and negative active, reactive energy, four quadrant reactive energy;

3, time measurement positive and negative active, reactive maximum demand and time;

4, complex rate function;

5, with RS485 interface and an infrared communication interface;

6, with the parameters of automatic wheel function, the wheel of the parameters and time, the order can be set;

7, real-time measurement of total and A, B, C phase of the voltage, current, active power, reactive power, power factor and grid frequency.