1. What Makes a Smart Controller “Smart”?

2. Definition “Smart controllers are irrigation clocks that automatically adjust irrigation run times in response to environmental changes” Southern Nevada Water Authority

3. Environmental Factors Affecting Irrigation Solar Radiation Wind Temperature Humidity Rainfall

4. Traditional vs. Smart Controllers http://www.srpnet.com/water/smartirrigation.aspx

5. Methods Used By Smart Controllers Historical Data Historical Data + Sensor Off-Site Data (Subscription) Weather Station Moisture Sensor

6. Sensor Installation Considerations It is very important to install on-site weather instruments in the right place. Rain gauges and rain shut offs should be mounted in an open area away from roofs, overhangs, buildings, and overhead vegetation. Likewise, temperature sensors should be located away from buildings or other structures that can heat up in the sun and affect the temperature at the sensor.

7. How a Soil Moisture Sensor Works (moist soil)

8. How a Soil Moisture Sensor Works (dry soil)

9. Other Considerations Most traditional controllers can be upgraded with rain sensors for minimal costs Smart controllers may not save water if you are irrigating efficiently now Make sure the smart controller you select allows for watering restriction schedules

10. For More Information http://www.epa.gov/watersense/products/co ntroltech.html http://www.epa.gov/watersense/products/co ntroltech.html http://www.irrigation.org/swat/control_climat e/ http://www.irrigation.org/swat/control_climat e/ http://itc.tamu.edu/documents/Complete%20 2010%20Smart%20Controller%20Report%207 -15-11.pdf