Intelligent Watering Computer:The watering duration varies from 1s to 99min and frequency from 1h to 15 day. 3 Separate Irrigation Programs:Setting 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 Sensor:The 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 Lock:The 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 applications:Suitable for various irrigation systems and hose tap,apply to greenhouse,outdoor lawn,outside plant.