Streambar and power settings

I just replaced a Roku Ultra with a Streambar. I'm using a 23" Viewsonic computer monitor as the display. When I used the Ultra there was a "Power" feature in Settings so I could set the Roku to send a sleep command to the display to turn off. The Streambar does not have this feature and I cannot figure out how I can set the Streambar to turn off the display after it's at the home screen/idle for a period of time. All it does it show the screensaver forever. Any ideas? 

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