? Spectrum analyzer is an instrument to study the spectrum structure of electrical signal, which is used to measure signal parameters such as signal distortion, modulation system, spectrum purity, frequency stability and modulation distortion. ? Can measure 9kHz-3.2 GHz, high performance, low consumption and low cost design. ? The display adopts 10.4-inch TFT LCD screen, which makes the operation more intuitive and convenient. ? It is an essential means of radio signal measurement, and is a common tool for electronic product research and development, production and inspection. Can hold maximum value, minimum value, average value, normal value, sample value. ? 100% Fully Refund or Replacement: We are committed to providing the best customer service and bring the best shopping experience to you. We absolutely think you'll love this spectrum analyzer. If you don't like it or have any questions about this product, please feel free to contact us, we will serve you wholeheartedly