MESTEK SL720 Digital Sound Level Meter Noise Volume Measuring Instrument Decibel Monitoring Tester 30-130dB Noise Measur

Features Polarized capacitor microphone provide fine performance for precision noise measurement apacitive test It is the professional noise measurement which can detect 30dB 130dB noise and with 2 response speed mode for you to choose Real time measurement and quick response Indoor and outdoor environmental noise sampling frequency quick response is 0 125 seconds time and slow response is 1 second time A C dual weight measurement A weighting can simulate the frequency characteristics of low intensity noise of the human ear suitable for environmental noise detection and C weighting Simulate the characteristics of high intensity noise suitable Sound pressure analysisof machine engines Easy to carry design Exquisite shape design easy to fit in your pocket Make noise measurement easier Backlight display The default backlight is long on when starting up Clear reading no parallax Long press the MAX button for one second during measurement Lock the maximum measured value Suitable for environmental sound detection sound insulation detection industrial noise detection Sound detection such as electrical sound detection Specifications Main material ABSPower su pply mode 2 AAA battery not included Noise accuracy ±2 0dB reference sound pressure standard 94dB 1KHz Frequency response 31 5Hz 8KHzDynamic Range 50dBMeasuring range 30 130dBDigital display 4 digit LCD display resolution 0 1dBDynami characteristics FAST SLOW reaction speedWorking temperature and humidity 0