1. Do not exceed the voltage and current range, otherwise the meter will be
damaged.
2. The positive and negative poles cannot be reversed, and the reverse may damage
the instrument.
3. The working temperature is -10 ~ 50 ° C, the storage temperature is -20 ~
70 ° C, and the instrument should be in a dry environment.
4. Do not attempt to disassemble the instrument. Failure to seal the package will void
the warranty.