1. display  voltage, current, power, power factor/frequency value simultaneously .

2. all values are effective

3. auto measurement

4. voltmeter range: 75V/150V/300V/600V
5. ammeter range: 0.5A/2A/8A/20A

6. power factor: －1.000～1.000
7.frequency; 45-65Hz, bandwidth: 5KHZ

8.accuracy: class 0.5
9. set the up-low limitation alarming for volt, ampere,  Hz