Name of this movie? Please help (digital TV decoder with ability to watch and kill people)

Few years ago I watched a movie. I remember only few things:

1. Movie was about digital TV - decoder of this digital TV had ability to kill people (first to freeze, then to kill)
2. Movie was concetrated on red light from TV decoder - camera often shows this red light.
3. It was generally normal movie, with conspiracy accent, I don't remember if it was possible to watch people in remote viewing through this digital decoder but I think it was possible.

I was made by USA.

Thank you.