Signal tester based on narrowband Internet of Things

The utility model discloses a signal tester based on the narrow-band Internet of Things, and the tester comprises a housing which is provided with an opening, a control key, and an antenna interface which is used for connecting an external antenna; the control circuit board is arranged in the shell and electrically connected with the control key and the antenna interface, and the control circuit board is provided with a narrowband Internet of Things module used for detecting an NB-IoT and eMTC network; the display screen is arranged between the control circuit board and the opening of the shell and electrically connected with the control circuit board, and a display area of the display screen corresponds to the opening of the shell; and the power supply assembly is arranged in the shell and is electrically connected with the control circuit board. The portable Internet of Things network tester is simple in overall structure, can realize miniaturized design, has portability on the premise of having basic funct