Features: The measuring range- of the sound level meter is 30dB to 130dB . Highly accurate with ± 1.5dB. Real-time monitoring can give you accurate data on the sound level in the area. Sound meter features backlight- , large LCD- display, maximum/ minimum noise monitor-, data hold function. This audio noise measure device is a great tool for checking, monitoring or controlling and test the sound level of any environments. Widely used in factories, transportation, car, baby room and audio system- offices, sound quality control in homes, schools, and construction sites-. Portable sound level meter is light and compact- design, easy to carry with you and operate with one-hand. Specifications: Material:abs Item size: approx 159x50x33mm/6.3x2x1.3-inch Package size: 185x55x38mm Measuring range: 30-130dBA Accuracy: ±1.5dB Power supply: 3xAAA(Not included) Package Includes: 1xDecibel Meter note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.