Sonoff Irrigation system

[Stephan Maritz]

I see it goes up to 12 zones, can 1 zone be programmed to switch on when any of the other zones go on, i.e. a master type zone, as I can then connect to a pump via a relay?

It would depend if the system would allow more than one zone to run concurrently. Then you could probably configure scenes so that zone 1 is always on when any other zone is on, or something like that.