The valve box typically contains the main shut off valve, which controls the flow of water for the entire sprinkler system, as well as the manifold, and a series of sprinkler control valves ...

[danman]’s sprinkler system has four 12V AC valves that need wrangling, and no data cables, necessitating the wireless setup. Initially, his control box contained a 240V AC to 12V AC 50VA ...

The Vancouver, B.C., company is building devices that integrate with existing irrigation systems, allowing farmers to monitor watering and remotely control valves to turn the flow of water off and on.