| Circuit | Custom one-chip of microprocessor LSI Circuit |
| Voltage ranges | 10 ACV to 600 ACV, auto range. |
| Wire connections | 1P/2W, 1P/3W, 3P/3W, 3P/4W. |
| Safety standard | IEC1010 CAT III 600 V. |
| ACV input impedance | 10 Mega ohms. |
| Spec. tested frequency | 45 to 65 Hz. |
| Data Hold | Freeze the display reading. |
| Data Record | SD Card Record. |
| Sampling Time | Approx. 1 second. |