About this item 3 separate watering schedules: You can use our automatic watering timer to set three different watering schedules based on different properties of your plant. The watering duration can vary from 1s to 99 min and the watering frequency can range from 1h to 15 days. 2 batteries we sent can be used for 6 months to a year. Rain sensor: A rain sensor chip is installed on the top of the watering timer. When it rains, the watering program automatically closes. After the water on the sensor chip naturally evaporates or dries up, the timer setting program will be automatically restored. The function can be turned on or off. Multiple mode: The automatic watering timer has a child safety mode, prevents children and pets from triggering the watering program. watering to avoid damaging plants and wasting water resources. Choose manual mode to water temporarily when the temperature is high. Waterproof: Drip irrigation can be used outdoors, because the exterior of our watering system #39;garden irrigation is made of waterproof ABS+PC plastic, suitable water pressure is 0.05-0.8 MPa. And it applies 1/2 and 3/4 water faucet fittings.