Matters needing attention when using high-voltage insulation resistance tester:

1. Before measuring resistance, the circuit under test must be completely discharged. And completely isolated from the power circuit.

2. If the test pen or power adapter is damaged, it needs to be replaced. The test pen and power adapter of the same model and electrical specifications must be replaced.

3. Do not use a high-voltage insulation resistance tester when the battery indicator indicates that the power is exhausted. If the high-voltage insulation resistance tester is not used for a long time, please remove the battery and store it.

4. Do not store or use high voltage insulation resistance tester in high temperature, high humidity, flammable, explosive and strong electromagnetic field environment.

5. Please use a damp cloth or detergent to clean the housing of the high voltage insulation resistance tester. Do not use abrasives or solvents.

6. When the high voltage insulation resistance tester is wet. Please dry it before storing.