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1.Pinhole in the acoustic pillar |
2.High sensitivity |
3.Power polarity protection circuit |
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1.Area:50~100m² (adjustable) |
2.Audio transmission distance:100m |
3.Sensitivity:-60dB±3dB |
4.Impedance:600Ω |
5.Signal amplitude:0~5Vp-p |
6.Frequency range:100Hz~15KHz |
7.Power supply:DC9V~12V 20mA |
8.Wire length:70mm |
9.Dimension:Ø13*50mm |