Moen's Smart Sprinkler Controller has a built-in battery source that maintains your irrigation schedule during a power and Network outage. If Network connection is lost, schedules will continue to run and continue to skip based on soil and rain sensors (if applicable). Schedules will not react to changes in weather conditions. No mobile updates will be possible. If power is lost, future and in progress schedules will not run. When power is restored, in progress schedules will resume at the zone they left off with. Future schedules will run at their scheduled times.