"Smart" irrigation controllers reduce outdoor water use by monitoring and using information about site conditions (such as the site's sun exposure, soil moisture, rain, wind, slope, soil, plant type, and more). They apply the right amount of water based on those factors, not too much and not too little, to maintain healthy growing conditions. For example:

• During hot weather, plants require more water than during cooler periods. "Smart" controllers adjust the amount of water applied accordingly.
• When significant rainfall occurs, rain sensors compensate by reducing the amount of water, as appropriate.
• If you have a soil type that absorbs water very slowly or a property with steep slopes, "smart" controllers will use that information and apply less water, more frequently, to minimize runoff.