A:Answer The Fire TV Edition television features a Sleep Timer.
Using the remote go: Home > Settings > Sleep Timer.
Another option is press and hold the Home Button for 3 seconds to launch the Quick Access Menu and select Sleep Timer.
This function turns off the TV in: 5 , 10 , 15 , 30 , 60, 90, 120, 150, 180 and 240 minutes.
David M. - Toshiba Support