Check the listing for details. Digital Sound Pressure Level Meter Sound Noise Level Meter Decibel Audio Tester. Condition: New. Listed at 154.99 USD. Digital Sound Pressure Level Meter Sound Noise Level Meter Decibel Audio Tester Note: Battery not Included During The Shipping !!! Features:1. Data storage function allows to store up to 15,000 groups of data.Connect with the computer through USB cable, which supports data record download, real-time sampling analysis, and graph & data printing.2. Real time display the current temperature(℃/℉ switchable) and humidity.3. 2.7" large LCD display for easy reading, convenient to use.4. Wide measurement range from 30dB to 130dB, Frequency: 31.5Hz - 8KHz, 5. Resolution: 0.1dB, Accuracy: ±1.5dB.5. With A and C equivalent weighted sound pressure levels.6. Fast and slow dynamic characteristic mode.7. Both AC and PWM signal output are available.8. Low battery indication, automatic & manual power off function.9. Equipped with sponge ball and a sturdy storage case. Compact and light,convenient to hold and carry.10. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc. Specifications: Brand nameSmart Sensor ColorYellow and blackModel number----Calibration sound source94dB@1KHzMeasurement range30-130dBA/35-130dBCAccuracy±1.5dBResolution0.1dBDynamic range50dB/100dBOverload indicationOVER/UNDERFrequency weighting characteristicA and CDigital display31/2 digitsAnalogy bar graph1dB/1 bar graphSampling rate20times/secondAC signal out1 Vrms/full bar grphDynamic characteristicFAST/SLOWData storage quantity15000The maximum value holdingMAXAuto power off(after o operation for 10 minutes)Microphone1/2inch polarization capacitanceOperation volyage3.7V Lithium battery/USDB 5VBattery life12hr(continue use)Temperature measure range0-45°CTemperature accuracy±2°CHumidity measure range10-99%RHHumidity accuracy±5%RHItem size225*66*31cmItem weight153gPackage size260*215*60cm