1. Before removing the battery cover or rear cover of the instrument, disconnect the test leads first.
2. Do not use the meter with the battery cover or rear cover removed.
3. The two sides of the clamp-shaped iron core should be well matched, and there should be no impurities and dirt.
4. Do not store the instrument in a high temperature or high humidity environment.
5. To avoid damage to the instrument, do not use corrosives or solvents.
