A dongle for relaying communication is disclosed. The dongle according to one embodiment of the present disclosure comprises: a first communication interface for wireless communication; a second communication interface for communication with a device; and a processor for controlling the first communication interface to download, from a server, a control program for controlling a device on the basis of identification information of the device received from the device, and controlling a second communication interface to output a control signal for controlling the device, using the downloaded control program.