Comprehensive Accurate Measurements: This decibel meter is designed to provide accurate noise level measurements from 30dB to 130dB. With a high accuracy of 1.5dB, it ensures reliable data collection in various environments. Fast and slow response switching: The device features a frequency response of 31.5Hz-8.5kHz and a sampling rate of 2 times per second. It is suitable for environments with fluctuating noise levels and can effectively track changes in sound intensity. Optimized visual display: Equipped with a large backlit LCD screen for clear readings in low-light conditions. When battery power is low, the display shows a low battery indicator to prompt timely battery replacement. Wide range of application scenarios: This decibel meter is suitable for noise monitoring in industrial, residential, educational, and home environments. Its portable design makes it a practical tool for various sound measurement needs. Power Supply: 3 x AAA battery (batteries not included) Color: As shown Material: Plastic Package Contents: 1 x Decibel meter Note: Light reflection and differences in display screens may cause slight variations in the color of the item as shown in images. Measurement error allowance is +/- 1-3cm.