Decibel Meter Sound Level Reader 30-130dB(A), Hand-held Sound Noise Meter with Backlight Alarm, Digi Previous page Next page The decibel meter has been adjusted properly. Calibration is not recommended within two years. 1 x Sound level meter3 X AAA 1.5V batteries1 x Wind resistant sponge ball1 x Operation Manuall XRCLIF---A professional factory that produces sound level meter. We are committed to creating high-quality measuring instruments, providing customers with suitable db meter with high accuracy and giving customers a good shopping experience.A great noise measuring tool for factories, transportation, car, classeroom, baby room and audio system offices Measuring range: 30dBA~130dBAAccuracy: 1.5 dBFrequency range: 31.5Hz~8.5KHzFrequency weighting: AResolution: 0.1dBPower supply: 3*1.5V AAA Batteries are included the decibel sound meter is an instrument used to measure the ambient sound level, such as sound level around factories, workshops, schools, residential, road, audio etc.Ideal for testing music recording, neighbor noise complaints, industrial settings. This sound pressure level meter is lightweight and easy to carry, with the backlight feature(Light up around 10s for power saving), this sound meter is appropriate for gathering the sound data at night. Our digital sound level meter is designed with large LCD display with backlight, which can quickly show the measurement, clearly and easy to read. Function: Disable the automatic off function, sound meter can continuously measure noise value Current Sound level measurement monitoring Minimum and Maximum mode: let you quick to know the the highest and lowest sound level detected Automatic update the max and min lev