There are plenty of apps on the Mac which interfere with your energy saver settings for putting the Mac to sleep, shutting down the Mac, and, well, you know– save more energy.
Lights Out is an inexpensive Mac utility which adds a few additional functions to Energy Saver settings and works even when your old settings do not.
Settings are quite simple. Set Sleep to Active or Inactive. The, select hotspot corners on your Mac’s screen to make sure it goes to sleep (or doesn’t) when you want it to.
You define the corner hotspots, but there are other options, too. For example, define separate hotspots for sleep or never sleep.
Sleep can be suspended for a specific time period. And, you get control over which apps can be running and will suspend sleep on your Mac.
Instead of a System Preference pane, Lights Out is a Mac app, so it can override Energy Saver settings, and it’s operated from the Dock.
Why would you use Lights Out? If you don’t worry about your Mac going to sleep, or have issues with apps that prevent the Mac from sleeping when it should to conserve energy (obviously better on Mac notebooks), then don’t bother. But if your battery life is important and you want more controls over Energy Saver options, Lights Out is just about it.