Want to test the sound level? Need to know the noise level? Try our Meterk Digital Sound Level Meter. It's featured with wide measuring range (30-130dB). It's portable and easy to use as a handy instrument for sound quality control in factory, office, home, school and construction site. Features: Large LCD backlight display for clear reading, convenient to use at night. Wide measuring range: 30-130dBA, Fast Responding. Sound level measurement with stable and reliable performance. Min./Max./Data Hold function and OVER warning sign of over range measuring. Low battery indication, manual/auto shut off. Equipped with sponge ball. With mounting hole of tripod, allowing to be placed on the stand, easier measuring when your hands are busy. Portable and easy to use，suitable for sound quality control in factory, traffic, car, baby room and audio system office, home, school and construction site. Specifications: Brand Name: Meterk Color: Black Material: ABS Plastic Measuring Range: 30-130dBA Accuracy: ±1.5dB Resolution: 0.1dB Frequency Response: 31.5Hz to 8KHz Frequency Weighting Features: A Weighting Display: LCD Display Over Range: LCD Show OVER Power Supply: 3 * 1.5V AAA Batteries(Included) Operation Environment: 0-40℃ 10-80%RH Storage Environment: -10-60℃ 0-90%RH Item Size: 56 * 36 * 177mm / 2.20 * 1.42 * 6.97in Item Weight: 122g / 4.32oz (Batteries Included) Package Size: 22 * 12 * 4.2cm / 8.66 * 4.72 * 1.65in Package Weight: 216g / 7.63oz Package List: 1 * Sound Level Meter 1 * Sponge Ball 1 * User Manual (English + French + German + Italy + Spanish) Large LCD backlight display for clear reading, convenient to use at night. Wide measuring range: 30-130dBA, Fast Responding. Sound level measurement with stable and reliable performance. Equipped with sponge ball. Portable and easy to use，suitable for sound quality control in factory, traffic, car, baby room and audio system office, home, school and construction site.