Widely Used:A decibel meter is an instrument used to measure ambient sound levels. Decibel meter can be used in homes, factories, workshops, schools, residential areas, offices, streets, hotels, hospitals, laboratories, theaters and sound systems, the scope of application is very wide and an indispensable tool in life. High Precision The measuring range of the sound level meter is 30dB to 130dB with fast response speed and stable and reliable performance. A / C Double-weighting Measurement:The A-weighting simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. Fast and Slow Response Rate Conversion:The spl meter has the function of converting the fast and slow response rate. Maintain the Maximum Value:Long press the MAX key to lock the maximum value measured during the measurement. Note that db meter does not have data logging and saving capabilities.