WBICs are different from conventional controllers. They use evapotranspiration data to determine irrigation schedules. As there are many options to consider, you will want to consult your landscape company or local irrigation supply shop for more information and to help you choose the best one for you.
If you don’t want to delve into the land of weather data, you can implement sensors with your conventional controller. Sensors include ET, flow, rain, wind and freeze. Some can be easily plugged into your existing controller.
For instance, a rain sensor will shut down the irrigation controller during periods of measurable rainfall. These sensors can be inexpensive options to help you reduce your water use.