Readings exhibit the powerful voltage depending on the standard value of samples in excess of a complete number of periods of the basic frequencySau khi ra m?t ?ng d?ng ?ã tr? nên ph? bi?n và thu hút l??t t?i c?a ng??i ch?i trên th? tr??ng. . Site sixty one Industrial ScopeMeter® Recorder Method YZWX and ? to enter the time in hrs and minute