Howdy folks, So hunting has been fruitless and I'm starving. I swear I read somewhere of an in-line soil miosture sensor. A sensor was burried in every zone and didn't need a special control box or anything. I think if it reads enough moisture it completes the circut to the common before it gets to the valve? Is anyone familiar with this? I can't find it anywhere. It was a university publication that I was reading. Thanks.