Long story... as short as possible. I took over a large 67zone commercial system last Jan. We have slowed the leaks from about 15 gph to 2 gph since we have been maintaining the system. The rest of the leaks are more than likely under some asphalt parking lots, or just 7-8 pin hole leaks that we can't find. What I am looking for is a battery operated valve that I can controll with the controller. Maybe an intinna that I can hook into the master valve port that sends a signal to the MV? Problem is I dont think anything like this is around. Has anyone heard of anything like this? A svc synced with the run times will not work, bc they do not keep time very well.