Reference Level-2831
94dB@1kHz
Calibration-2831
Sound Calibrator Class 2 or Class 1
Environment-2831
Temperature 23°C，Pressure 101.325kPa，Humility 50% RH
Reference Level
94dB@1kHz
reference-level-2831
Calibration
Sound Calibrator Class 2 or Class 1
calibration-2831
Environment
Temperature 23°C，Pressure 101.325kPa，Humility 50% RH
environment-2831
Reference Level
Reference Level
94dB@1kHz
Calibration
Calibration
Sound Calibrator Class 2 or Class 1
Environment
Environment
Temperature 23°C，Pressure 101.325kPa，Humility 50% RH