Question
I have just purchased a home. We have figured out that it already has a sprinkler system but we cannot figure out how or where to turn it on. There was nothing listed in the seller's disclosure regarding the water sprinklers and no owner's manual. PLEASE HELP!!!

Answer
Usually at one of house sides you could find an small box, branded: Rain Bird, Hunter, Intermatik, krain, rain dial. Those are the most common brands. Usually the system is in auto mode, so it will watering on certain days and hours. Depending on the brand the turn on method varies. If you can find the box let me know the brand and model and I will be able to give you more details.
Regards
Guillermo