Fecha de publicación: 08/10/2021 Fuente: Wipo "IOT" The utility model relates to the Internet of Things, in particular to an NB-IOT module data transmission control circuit, which comprises an NB-IOT module, a first isolation circuit unit, a second isolation circuit unit and an MCU (Microprogrammed Control Unit), the MCU is respectively connected with the first isolation circuit unit and the second isolation circuit unit, the NB-IOT module is respectively connected with the first isolation circuit unit and the second isolation circuit unit, and the NB-IOT module is connected with the first isolation circuit unit and the second isolation circuit unit. The NB-IOT module data transmission control circuit solves the problem of equipment damage caused by inconsistent high-level voltages of signals transmitted by the MCU and the NB-IOT module through the isolation circuit unit, further comprises a wake-up circuit unit, and the wake-up circuit unit is respectively connected with the NB-IOT module and the MCU. According to the NB-IOT module, the MCU is used for transmitting the first high level in the data to the NB-IOT module to wake up the NB-IOT module, the problem that the NB-IOT module is in a dormant state and cannot receive the data transmitted by the MCU is solved, and the NB-IOT module is suitable for the NB-IOT module.