1. The output voltage is regulated by the voltage regulator, which has the characteristics of high reliability and high durability;
2. LED digital tube with high brightness is used to display test time, voltage, current, and breakdown current and voltage value in real time;
3. Alarm current value can be preset continuously and arbitrarily;
4. The test time is displayed by three digit nixie tube;
5. It can display the leakage current value of the tested object during the test;
6. Time preset and display, test time countdown;
7. The output waveform is 50Hz sine wave.