An image display device configured to obtain device identification information corresponding to a peripheral device connected to the image display device and control a wireless communicator to transmit search data corresponding to the peripheral device to a control device of the image display device based on the device identification information, and to determine pairing data and control code information corresponding to the peripheral device, based on the device identification information, upon receiving response data from the control device, and transmit the pairing data and the control code information to the control device through the wireless communicator.