Automated sprinkler systems are a great way of watering gardens and yards. This convenient system allows you to control one or many sprinkler heads in a row, called a zone. The system comes with a watering brain box called an automated sprinkler controller. The box sports an incoming water connection (hose adapter) that feeds the system with water. It also has outgoing ports that feed each zone of sprinkler heads through devices called remote-controlled sprinkler valves. There are also hot wires that control these valves to turn the sprinklers on and off. A timer controls how long the system waters and then turns the water feed off.
...Source: http://electrical.about.com/b/2013/06/27/how-to-water-your-garden-without-even-being-there.htm
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