UOEIDOSB Digital Sound Level Meter - Professional Decibel Noise Meter with Data Logging, Time Display & Auto Off - Perfect for Home, Office, Industrial & Environmental Noise Monitoring

Auto calibration to assure the accuracy. Auto linear compensation: this advanced software program enhances the precision by correcting the non-linear accuracy of transducer. Make a quick adjustment for the sound velocity / thickness, and a quick recall to the stored dataCoupling status indication: Observing the coupling icon to learn if the coupling is accomplished or not.12 thickness measurement storage and recall function available, which facilitates the height work or working in wild area. Sound velocity measurement. 12 sound velocity for different material which is also adjustable .Thickness alarm setup.LCD backlight display.Low battery indication and auto power off.Metric/imperial selection.Technical ParameterAccuracy: 1.5dB (under reference conditions)Measuring Level: 30-130dB (A)/35-130dB (C)Frequency Range: 31.5Hz to 8.5KHzLinearity Range: 50dB/100dBDigital Display: 5 digitsResolution: 0.1dBBar Graph: 50 dBscale at 1 dB step for monitoring current sound pressure level displayOverload Indication: OVER/UNDERFrequency Weighting: A and CLevel Ranges: 30-80dB, 50-100dB, 60-110dB, 80-130dBSelf Calibration Time: 3secSampling Rate: 20 times/secondsAC Signal Output: 0.707Vrms/ full bar graph, output impedance is about 600ohmDC Signal Output: 10mV/dB,output impedance is about 100ohmDynamic Characteristic: FAST (high speed)/SLOW (low speed)Power Supply: 4x AA 1.5V battery or DC 6V 100mA (not include)Microphone: 1/2" Electrinic Condenser microphoneItem dimensions: 256 x 70 x 35mmItem weight: 238g Package Includes:1 Pc Sound Level Meter1 Pc Sponge Ball1 Pc Operation Manual1 Pc DC 6V CablePortable and easy to use.