I have a small farm in Northern Calif. that has irrigation water that I piped in over 35 years ago. I wanted to set up irrigation scheduling for the entire ranch to keep it green and also provide an ability to ward off approaching first. Orbit was my choice. I have five of the 12 station controllers running all solar powered and self contained off grid. Each channel controls a max of 4 popup Orbit sprinklers. That is about 240 sprinklers! This is a great system managed on my mesh network.