Features  Field test kinds of inductive, electronic single phase meter  Measurement error, voltage, current, power, power factor and frequency at site  LCD display, English menu, direct viewing and convenient  Equip with RS232 to connect with PC  Multi power supply ways for different testing occasion  Large capacity storage device for mass memory  With 2pcs clamp CT to test ratio of current transformer. (Optional) Technical performance 1. Power supply：110～270V（AC）50Hz/60Hz 2. Input voltage Measuring scope：110～270V Precision：0.2%/ 0.3% 3. Input current Measure the current clamp 5A、 20A、 40A and 100A optional Precision： 0.2%/ 0.3% 4 .Energy measurement Precision：0.2%/ 0.3%/ 0.5% 5. Frequency Measuring scope：45Hz～65Hz Precision：0.1Hz 6. Phase angle Measuring scope: 0 ~ 359.9 degrees 7 .Power factor：0.01（0.4000～1.0000） 8 .Built-in 5A load 9 .Power: ＜5VA 10. Weight: 0.5Kg 11 .Size: 185mm×67mm×30mm 12. Work temperature: -10~50℃ 13. Relative humidity：20% -- 95%