Smart watering calculates the exact level of water required to meet the needs of your plants based on your location, the type of plants and type of emitter being used along with weather information from past and future forecasts.
Simply put, this means that given your particular environment and conditions, some plants require more or less water than others. That rate is calculated for each zone. You have the ability to modulate this level by using the slider control in the application. This essentially provides each user with a method for additional control and makes sure that each of your plant zones is getting the water that it needs.