Fecha de publicación: 22/10/2021 Fuente: Wipo "IOT" The utility model provides a combined NB-IOT communication module, which comprises a double-sided circuit board, a power supply chip, a peripheral circuit, an SIM card, an NB-IOT module, a working state indicating lamp, a radio frequency antenna and a pin header connector, and is characterized in that the power supply chip, the NB-IOT module, the working state indicating lamp and the radio frequency antenna are integrated on the same surface of the double-sided circuit board; according to the utility model, a modular design is adopted, the size is small, a plug connector structure is adopted, a power supply circuit with wide voltage input and fixed voltage output is adopted, and the power supply circuit can be conveniently combined with other products in the market to realize the function of the Internet of Things, and is widely applied to research and development of Internet of Things products such as intelligent smoke sensors, intelligent power strips, intelligent electric meters, intelligent gas meters and the like; research and development cost is reduced, research and development resources are saved, and research and development efficiency is improved.