Sorry for the inconvenience, U1 itself has no backlight effect.

This is SofaBaton, very glad to help you.U1 can add 15 devices. I sent you a video of U1. I hope it can help you better understand U1,There is a video, hopes it can help you. https://www.youtube.com/watch?v=hMSmvxwDeI4 

Dear Customer, Thanks so much for your information and good suggestion. If you have the network request function, then you can directly control our remote.Is this answer your question？thanks to let know if still have issues.

Regarding your equipment, we found a code library similar to the model you provided in the code library. Try adding Brand：Samsung Model： QN50LS03TAFXZA Check whether it can be used normally, looking forward to your feedback Please don't worry, we will try our best to help you solve your problem Thank you for your patience and support.

Regarding your equipment, we found a code library similar to the model you provided in the code library. Try adding Brand：Sagemcom Model： RTIW383. Check whether it can be used normally, looking forward to your feedback Please don't worry, we will try our best to help you solve your problem Thank you for your patience and support.

Very glad to help you.Your device has been added to our database,Pls try to re-add it via searching Brand：Onkyo Model： TX-L50.

Sorry for the inconvenience,Your device has been added to our database,Pls try to re-add it via searching Brand：Sky Model：Q .

Very glad to help you.Your device has been added to our database,Pls try to re-add it via searching Brand：Denon Model： AVR-X4500H.

Sorry for the inconvenience, Your device has been added to our database,Pls try to re-add it via searching Brand：Xfinity Model： XG1V4-A .

Sorry for the inconvenience Can you provide us with specific models? We can check the code base, and you can send it to our mailbox, Service@sofabaton.com.