NB-IoT and CAT-M1 Analyzer, is designed for testing signal level in NB-IoT, Cat-M and GSM Networks. It measures the signal level in the air at a certain location. It measures continuously and shows the signal strength with both realtime values. It is a hand-held easy-to-carry product supporting NB-IoT signal network quality analysis. By analyzing various indicators of signal quality to determine the strength and stability of the signal. It helps to guide users to quickly select the best installation location and the best network operator for the installation of terminals. It can be widely used in multiple industries like power supply, water supply, gas supply, environmental protection monitoring, water conservancy, meteorology, hear pipe network, coal mine, oil field etc.