Intelligent Watering Computer: The Watering Duration Ranges From 1 Second To 99 Minutes And The Frequency Ranges From 1 Hour To 15 Days.3 Separate Irrigation Systems: The Configuration Of The 3 Independent Irrigation Proes Can Record Your Watering Plan, Each Irrigation Proe Can Set Different Watering Frequency And Watering Time, Allowing You To Adjust The Watering Time More Flexibly And Better Meet Your Needs.Automatic Rain Sensor: The Top Of The Smart Timer Is Equipped With A Rain Sensor Chip. When The Chip Comes In Contact With Rain, It Will Automatically Delay Watering Until There Is No More Water On The Chip.Manual Irrigation And Child Lock: Manual Button Allows Watering Instant And Flexible Without Interrupting Your Set Watering Proe. Child Lock Can Lock The Timer Can Avoid Accidentally Changing The Proe Setting.Special Attention: Lithium Batteries Are Prohibited. Two 1.5 V Alkaline Batteries Should Be Used.