"Turn off display" is a free tool to turn off your monitor screen. Well obviously you can use the power button of your monitor. But, this tool is for those monitors that do not have power button like those of laptops. Those who have monitors with power button, you don't always have to follow the traditional method. You can always try new ways like Turn off display.
With "Turn off display" you can turn off your monitor in a single click. Wait! there is more. It doesn't just turns off your display it also locks your computer when your display is turned off.