Precautions for noise testers
1. Read the instruction manual before use to understand the use method and precautions of the instrument.
2. Pay attention to the polarity when installing the battery or external power supply, and do not reverse the connection. The battery should be removed when not in use for a long time, so as not to damage the instrument due to leakage.
3. Do not disassemble the microphone, prevent it from being thrown, and place it properly when not in use.
4. The instrument should not be placed in a place with high temperature, humidity, sewage, dust, air or chemical gas with high content of hydrochloric acid and alkali.
5. Do not disassemble the instrument without authorization. If the instrument is abnormal, it can be sent to the repair unit or the factory for inspection.
6. Pay attention to waterproof the noise meter and prevent it from falling from high altitude.
