Fuente: Wipo "IOT" The embodiment of the utility model discloses a detector. The detector comprises a processor, a battery, an NB-Iot/eMTC (Narrow Band-Internet of Things/eMTC) module and an SIM (Subscriber Identity Module) card configured for the NB-Iot/eMTC module, the processor is used for acquiring a detection instruction; and controlling the NB-Iot/eMTC module to initiate detection according to the detection instruction. The utility model relates to an NB-Iot/eMTC module. The method is used for detecting an NB-Iot/eMTC network. The method comprises the following steps: acquiring a network parameter of the NB-Iot/eMTC network according to the network parameter of the NB-Iot/eMTC network, and sending the network parameter of the NB-Iot/eMTC network to a processor, and the processor is used for sending thenetwork parameter of the NB-Iot/eMTC network to an One NET server through the NB-Iot/eMTC network. The embodiment of the utility model also discloses a detection system.