Results for4 1 5v battery listen through wall devicefrom 2 Products.
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Listen Through Wall Device Description This two power transducers listen through wall device is the most updated one in similar products nowadays, which can give listener the ...
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Listen Through Wall Device Specification Power of Signal: 1mW Frequency of Swing: @1KHz,6 Db (attenuation) @300Hz,15 Db Channel Attenuation Separation: >40 Db Stereo Balance ...
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