Data Sheet

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1/15/2018 Gravity: Analog Sound Level Meter SKU:SEN0232 - DFRobot Electronic Product Wiki and Tutorial: Arduino and Robot Wiki-DFRobot.com

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FAQ

Q1. Why is the decibel value unstable, and constantly varying? Is this normal?

A. The decibel value measured by the sound level meter is the sound level of a short period of time (about hundreds of milliseconds), so the value is a

instantaneous value. The sound level meter is measuring constantly, and at different times the sound is varing, so the decibel should be varing . This is normal.

Q1. Although the environment is very quiet, but the decibel value is not less than 30dbA. Why?

A. In our living environment, there is always a little sound . Human's ear is hard to hear the sound below 30dBA, but the equipment still can detect the sound. So it

is difficult for the sound level to be less than 30dBA in our living environment.

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