High-Precision Sensor: This db meter measures within a range of 30-130dB with an accuracy of ±1.5dB and a resolution of 0.1dB. Equipped with a condenser microphone, it delivers professional and reliable data for monitoring noise levels in both home and workplace environments employs a fast mode (125 milliseconds) for time weighting and an A-weighted mode for frequency weighting Maximum/Minimum Measurement:Our decibel reader features maximum/minimum measurement capabilities,displaying peak/trough values generated by sound waves within a specific time frame. The data hold function allows you to freeze the current measurement reading as needed 1 decibel resolution. The backlit digital display ensures clear readings in dark environments. When battery power is low, the LCD screen displays a low-voltage icon to indicate the need for battery replacement Lightweight and Portable: The noise meter is lightweight and easy to carry. Widely used in factories, transportation, automotive, nurseries, and office sound systems, it is suitable for sound environment quality control in homes, schools, construction sites, and other locations