Sensor-based controllers rely on soil moisture sensors placed below ground in the root zones of lawns and landscapes to determine if and how long to water. Soils may be maintained between lower and upper target moisture levels for optimal plant health. Alternatively, a simpler decision is to schedule the regular irrigation program to run based on the soil moisture. Weather-based and sensor-based control products are available as stand-alone controllers or add-on devices to existing controllers. Each has been shown to reduce irrigation water usage up to 70 percent without sacrificing the quality of your landscaping.

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