Hello Friend. Each universal control brings its code manual for each brand of device, for example the RCA controls bring the brand of the TV. and even the numbers of codes, controls that say they are intelligent bring the mark on each key of the TV. that will be used and others that are only for sound equipment like sony those if they have to be originals or copies but there it says in the control so that equipment is either for tvs.trc. or lcd. or for dvd. but there are some controls that keep the set key pressed. and the volume bar appears on the TV screen. The code is programmed sometimes the most expensive to contract is the control for the sound equipment that must be the original. I hope it served you and you have left a little doubt. regards