UOEIDOSB Digital Sound Decibel Meter - Professional Noise Level Tester with LCD Display for Home, Office, and Industrial Use - Accurate dB Meter for Audio Monitoring and Sound Measurement

With modern, compact, portable design.Frequency weighting characteristic: A.Equipped with sponge ball to filter-out unwanted signals.Max reading hold.Auto power off.Auto backlight displayLow battery indicationPowered by 9V Battery (not included)Technical Parameter:*Measuring range: 30dBA~130dBA*Accuracy: ±1.5 dB*Frequency range: 31.5Hz~8.5KHz*Frequency weighting: A*Digital Display: 4digits*Resolution: 0.1dB*Sample rate: 2 times/second*Microphone: 1/2 inch electret condenser microphone*Power supply: 9V Battery(Not included)*Operating condition: 0~40 10~80%RH*Storage condition: -10~60 10~70%RH*Weight: 144g *Dimension: 57*26*149mmPackage Includes:1pc Digital Sound Meter1pc User ManualPortable and easy to use.