The decibel meter can measure the decibel (dB) of the sound around you, use it to become a good helper around you. The functions are as follows: 1. Indicating decibels 2. Display the current noise reference 3. Display the minimum/average/maximum decibel value 4. Display measurement history 5. Set high decibel warning According to the noise level, the decibel level is divided into various levels, and the sound level can be easily recognized. Too high a sound will damage the health of the human