Turn your device into an AC magnetic field meter by using its magnetic field sensor. Measure the RMS values from AC magnetic fields. Fast Fourier Transform (FFT) to obtain the magnetic field frequency spectrum. • Gauge to show the RMS B-field in the X,Y or Z directions, or from the magnitude. Or alternatively show the DC magnetic field. • RMS graph to show the gauge readings over time. • Lower display shows time series data or a FFT from it. • Peak indicators for the frequency spe