Once a WaterSense labeled controller is installed and programmed, the controller automatically takes care of seasonal weather and site-specific adjustments, thereby not requiring constant monitoring. However, it is important to keep in mind that no irrigation control system should be installed on the basis of “set it and forget it.” You will need to periodically inspect the landscape to ensure that the irrigation system is performing properly. This is especially important after originally installing the controller. You will need to spend a couple of weeks monitoring your landscape. If everything looks lush and green, you can try dialing down the water budget feature on the controller. You can continue to adjust the controller’s water budget feature until you find a balance that is both water-efficient and healthy for you plants.
Source: Weather-Based Irrigation Controller Mini Report (https://www.epa.gov/sites/production/files/2017-01/documents/ws-products-minireport-irrigation-controllers.pdf)