Is there a quick keyboard shortcut to turn off your monitor?

[ProfRBird]

I can lock my screen when I walk away by pressing Windows_Key + "L". However, I want my screens to go black so they do not use energy. I want my computer to continue working on processes when I walk away so I do not want the computer to go to sleep. How can I save energy by turning off my monitors when I walk away using quick shortcut keys?Thank you!

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