Irrigation controller (timer)
Also known as: sprinkler timer, irrigation timer, smart controller
Device that schedules irrigation zones to operate at specified times for specified durations. Modern smart controllers integrate weather data and soil moisture for adaptive watering.
An irrigation controller is the timer that schedules each zone's run time. Basic controllers operate on fixed schedules; modern smart controllers adjust schedules dynamically based on weather, soil moisture, and plant requirements.
Features vary widely. Entry-level controllers (Hunter X-Core, Rain Bird ESP-TM2): manual schedule entry, basic seasonal adjust, $100-$300. Smart controllers (Rachio, Rain Bird WiFi, Hunter Hydrawise): WiFi-connected, weather-data integration, mobile app control, $200-$500. Commercial controllers (Hunter ACC, Rain Bird IQ): central control of multiple sites, two-way communication, advanced flow management, $1,000-$5,000+.
For irrigation operators, smart controllers are increasingly the default install in residential applications. Customer benefits — automatic schedule adjustment, leak detection, water savings — drive adoption. Operator benefits include the ability to monitor and adjust customer systems remotely, reducing service call volume. Many smart controllers offer subscription-based pro features for irrigation contractors managing multiple customer sites.
Related terms
Irrigation zone
A grouping of sprinkler heads controlled by a single valve. Zones allow different areas of a landscape to receive different watering schedules and durations.
Irrigation backflow assembly
Backflow preventer specifically required at the connection between potable water supply and irrigation system. Annual testing required by most municipalities.