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Frequency range: 31.5Hz to 8kHz
Measuring range: (28) 30-130dB
Frequency density: A / C
Microphone: 1/2 inch polarized capacitive microphone
Digital display: 4 digits LCD
Resolution: 0.1dB
Update Screen: 2 times / second
Timing Density: Fast 125ms, slow 1 second
Measuring range:
Range 1: (28) 30dB to 70 dB
DB range 2:60 to 100 dB
DB range 3:90 to 130 dB
Accuracy: ± 1.5dB
Dynamic range: 40dB
Data storage: 60000 samples
Interface: USB
Power supply: 01 9V battery
Operating temperature: 0-40 ℃ (32-104 ° F)
Relative humidity: ≤ 75% RH
