Keep up to four areas of the yard regularly watered with the HydroLogic 4-Zone Digital Water Timer. Easily select up to four separate start times on each valve to water exactly when you want. Each zone works like a separate timer, so the squash and sunflowers can be watered every morning while the lawn sprinkler comes on every few days. Avoid wasting water when it rains with the handy rain delay to pause the watering schedule for up to 7 days, the schedule will resume when the delay is over. Need to wash the car or spray off the walkway Manual mode allows you to turn on the water whenever you need it.