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. Choose to water on specific days of the week, or every few days, based on what your plants need. If rain is in the forecast, easily suspend watering for a day or two with the rain delay feature. Save water and reduce runoff with ECO mode. Need to water a hanging basket? Manual mode allows you to turn on the water whenever you need it. The dirt-resistant valve ensures a smooth flow, even with sand and particles commonly found in well water.