1. Before using the test pen, first check whether there is a safety resistor in the test pen, and then visually check whether the test pen is damaged, whether it is damp or water, and can only be used after passing the inspection.
2. When using the electric test pen, do not touch the metal probe at the front of the electric test pen with your hands. Doing so will cause an electric shock accident.
3. When using the test pen, you must touch the metal part of the end of the test pen with your hand, otherwise, because the charged body, the test pen, the human body and the earth do not form a circuit, the neon bubble in the test pen will not emit light, resulting in misjudgment. It is very dangerous to think that a charged body is not charged.
4. Before measuring whether the electrical equipment is charged, first find a known power source to test whether the neon bulb of the electric pen can emit light normally, and it can be used normally.
5. When testing a charged body under bright light, special attention should be paid to whether the neon bulb really glows (or not), and if necessary, you can use another hand to block the light to judge carefully. Don't make a misjudgment, judge the neon bulb to emit light as not emitting light, and judge that there is electricity as no electricity.
