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Noise reduction level | 30dB |
Microphone sensitivity | -42dB±3(0dB=1V/Pa 1KHz) |
Microphone impedance | ≤2.2K ohm |
Speaker sensitivity | ≥96dB @ 1.0KHz |
Speaker impedance | 8 ohm |
Operating temperance | -20°C~~60°C |
Protection level | IP54 |
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