Once both modules are configured, use XCTU to check that they are in the same network and can see each other. Click the Discover radio nodes in the same network button of the first radio module. The device searches for radio modules in the same network. When the discovery process is finished, XCTU lists discovered devices found within the network in the Discovering remote devices dialog. There is no need to add the remote device that has been discovered. Simply close the dialog by clicking Cancel.