Have you any important hardware equipment at home or at your office that need to remain under constant connection to the power supply networks? For example, fridge or servers, etc... But you need to leave them alone, to go away for vacations or other duties?
This extremely simple project show you how to build by yourself a cheap system to check the status of the power network, allerting you if the "Lights Went Out" sending an SMS to your mobile phone, saying something like "Ehi, the lost power here!".
For this porpuse we used an Intel Edison development board as basis for the project, plus other hardware equipment showed in the instructions you can find at the following Instructubles.com link: http://www.instructables.com/id/LightsWentOutAlert-a-Very-Simple-Intel-Edison-Proj