Precautions when using the voltage tester electric pen:
1. Before use, the electroscope must be tested at the power source to prove that the electroscope is really good before use.
2. When conducting an electric test, the electroscope should be gradually approached to the measured object until the neon tube lights up, and the measured object should not be directly contacted.
3. During the electricity test, the finger must touch the metal body at the end of the pen, otherwise the charged body will be misjudged as a non-charged body.
4. During the electricity inspection, it is necessary to prevent your fingers from touching the metal part of the pen tip, so as to avoid electric shock accidents.
