this remote control replaced at the same time with us 4 single. It is used as a remote for your TV, receiver, DVD player and amplifier. Nicely, the codes are in the known company where the remote control 1: 1 which functions takes over the original. When DVD players, however, I had a grudge manually, which also worked on short problems some keys. For people with little technical sense, the manual programming could be a little difficult, otherwise this is a great remote control at a fair price!