Keep your kiosk from going to sleep, however allows you to manage the screen on/off in your kiosk app.
Keep your system from going to sleep. Manages only the "System" state and not the "Display". This allows you to manage the display state in your kiosk app easily. - Made for Chrome OS devices running as a kiosk. - Installing is all that is needed, defaults to keep "System" form sleeping. - Chrome OS's default Display/Screen rules remain. I created this for a kiosk software we have which manages the Chrome OS "Display" based on a user defined schedule, however the ability to allow the screen to go turn off and then back later from the app is not possible without the use of wake alarms which ends up requiring hands on work on each kiosk. Now I simply add this ext. to the automatically installed extensions, set everything to kiosk mode and push the kiosk app... Done. I never have to touch the Chrome Box that runs everything.