Fecha de publicación: 24/09/2021 Fuente: Wipo "IOT" The utility model provides an electric power multi-service access terminal based on NB-IoT, comprising a wireless communication chip, an NB-IoT module, an encryption chip, a controller, an indicating lamp and an exhaust fan, the wireless communication chip is provided with a plurality of communication interfaces, and the plurality of communication interfaces are respectively connected with a plurality of service terminals; the first input end of the NB-IoT module is connected with the output end of the wireless communication chip, and the first output end of the NB-IoT module is connected with the input end of the encryption chip; the output end of the encryption chip is connected with the second input end of the NB-IoT module, and the second output end of the NB-IoT module is connected with the input end of the wireless communication chip; the indicating lamp is connected with the NB-IoT module; the controller is connected with the indicating lamp; the exhaust fan is connected with the controller and faces the NB-IoT module. The heat condition in the NB-IoT module can be detected in time, heat dissipation is carried out in time, and the working stability of the NB-IoT module is improved.