Loudspeaker Polarity Tester

  • RK5991N Microphone Polarity Tester

    RK5991N Microphone Polarity Tester

    RK-5991N Microphone polarity tester Product introduction RK5991N microphone polarity tester can distinguish positive and negative polarity of any type,size,material,impedance of loudspeaker headset,the moving coil receiver automatically and rapidly.The instrument has the advantages of simple operation,no error,automatic LED or alarm indication,the instrument adopts the pulse type automatic and rapid mensuration,and detect the tone index of the speaker in assembly line. Performance characteris...
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