If you look on the product page for the Lintronic Uni-2 (
www.lintronic.dk) you will find the manual. The manual tells you how to set up the Uni-2 to work with a remote.
Unusually the Uni-2 learns the code from the remote. You will need to set the Harmony up so that one button fires a code that is not going to be used in the room, then learn that code onto the Uni-2. Either learn a code that comes from a device not in the room or set up a device on the Harmony that you don't have and use any code from that or enter a miscellaneous Pronto code from
www.remotecentral.com and use that.