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    Reversing alarm transducer

    Pbulish：admin　　time：2007年12Month07Day
     
     
    静态电容：C0=1800±200pf
    谐振频率：fs=40.0±0.5kHz
    带　　宽：Δf=1.0±0.2kHz
    谐振阻抗：Z0=1100±200Ω