The 4DTV has 4 different addresses for the remote control. This allows a user to have up to four different 4Dtv receivers and still have just one remote to control all of them. To look at what address your 4DTV is, hit the up or down arrow key on the front panel simultaneously. This will show on the front panel as A0, A1, A2 or A3. By using the up or down key you can scroll to the address you want. Once this has been changed on the front panel, you then address the remote to the same code by holding the 4DTV button or SAT button on the remote until it flashes. Then enter in the appropriate matching code such as 100, 101, 102 or 103.