Precaution
*
Use the sound level meter gently, especially for microphone part, microphone is
delicate sensor that require careful handling, please avoid any crashing, knocking and
hitting, no water or oil entering.
*
If choose to use alkaline batteries, please use high capacity of alkaline batteries. And
remember to remove the batteries when don’t use sound level meter for more than one
week.
*
Do calibration before and after measurement if needed.
*
Keep sound level meter powering on status at least 8 hours every month for charging
internal clock battery.
