An IR Emitter An IR emitter (left) is pasted onto the IR sensor on this DVD/VHS player. The wire traces back to a Home Theater Master RF base station that picks up radio signals from the remote ...

The Samsung Galaxy S4 comes with a built-in IR blaster that turns it into a smart TV remote control through special software called WatchOn. By David Gonzales • March 14, 2013 ...

Your new basic Roku TV remote will still work off an IR sensor, so all of the old rules apply where you need a direct line of sight with the TV. However, the voice-controlled alternative does have ...