technical parameter 1. Test voltage: DC 3-1500V 2. Voltage accuracy: ±4% 3. Leakage current range: 0-2mA 0-20mA 0-100mA 4. Display mode: full digital display 5. Volume: 220 x 210 x 75mm 6. Weight: about 3.5gk 7. Power consumption: 20W 8. Power source: 220V±20%