?Real-Time Spectrum Analysis Function: real-time spectrum scanning, SPAN/RBW/CENT/MARKER function, MAXHLOD function, automatic maximum power detection ?Function Of Frequency Chromatogram: it shows the whole time and spectrum characteristics within a period of time, and can record all spectrum distributions within 5 minutes cyclically, so as to facilitate the inspection of frequency interference, emission leakage and other problems ?Spectrum Thermodynamic Diagram Function: it shows the overlapping density of spectrum contour in a period of time, and the frequency of repetition tends to be red, which is convenient for analyzing the spectrum statistical characteristics in a period of time ?Portable spectrum analyzer, built-in lithium battery, small size and lightweight, using the standard 5V charger can be charged, full charge can last about 9 hours. It's widely uesd in rf testing, wireless optimization, field networking, interference query, etc ?100% Guarantee: High quality product, we promise to do everything possible to satisfy all customers. However, if you are not 100% satisfied with our service or our products, simply contact us. We are always at the side of our customers to support and continuously seek new ways to improve