Intelligent Watering ComputerThe watering duration varies from 1s to 99min and frequency from 1h to 15 day. 3 Separate Irrigation ProgramsSetting 3 independent irrigation programs can save your watering plan, each irrigation program can set different watering frequency and watering time, allowing you to set the watering time more flexibly and better meet your needs. Rain SensorThe top of the smart timer is equipped with a rain sensor chip. When the chip contacts the rain, it will automatically delay watering until there is no water on the chip. Manual Irrigation and Child LockThe manual button allows for instant and flexible watering without interrupting your set irrigation program.Child Lock can lock the timer to ensure not accidentally change programmed setting. Wide range of applicationsSuitable for various irrigation systems and hose tap,apply to greenhouse,outdoor lawn,outside plant.