Feature: 1. Mini digital sound level meter with stable and reliable performance. 2. Wide measurement range from 30dB to 130dBA. 3. Fast and slow sampling rate for choice: 125ms or 1s. 4. Data hold function, maximum and minimum value measurement. 5. LCD display with backlight, convenient to use at night. 6. Low battery indication, automatic \u0026 manual power off function. 7. Compact and light, convenient to hold and carry. 8. Equipped with sponge ball for sensor conservation. 9. Mini digital sound level meter with stable and reliable performance. Wide measurement range from 30dB to 130dBA. 10. Fast and slow sampling rate for choice: 125ms or 1s. Data hold function, maximum and minimum value measurement. 11. LCD display with backlight, convenient to use at night. Low battery indication, automatic \u0026 manual power off function. 12. Mini digital sound level meter with stable and reliable performance. Low battery indication, automatic \u0026 manual power off function. 13. Wide measurement range from 30dB to 130dBA. Compact and light, convenient to hold and carry. 14. Fast and slow sampling rate for choice: 125ms or 1s. Equipped with sponge ball for sensor conservation. 15. ? Mini digital sound level meter with stable and reliable performance. Specification: Specifications: Color: White Material: ABS Plastic Display: 5 digits LCD, maximum Display 99999 Measuring Range: 30～130dBA Resolution: 0.1dB Accuracy: 1.5dB (under reference conditions) Frequency Range: 31.5Hz to 8.0Hz Frequency Weighting: A Weighted Over Range: LCD Show Over Time Weighting: Fast Sampling Rate: 2times/s Operating Temperature: 0～40℃ (10%～80%RH) Storage Temperature: -10～60℃ (10%～70%RH) Power Supply: 3 * 1.5V AAA Batteries (Not Included) Item Size: 15 * 5 * 2.7cm / 5.91 * 1.97 * 1.06in Item Weight: 72.6g / 2.56oz . Package List: 1 * Digital Sound Level Meter 1 * User Manual Note: When measuring under MAXIMUM mode, the meter will only display the value greater than the current value; when measuring under MIN mode it will only display the value less than the current value.