IM Modular Controller Advanced stand-alone irrigation management. The Rain Bird IM is the most flexible, full featured irrigation management system available in a stand-alone package. It offers features that maximize water conservation, it provides the flexibility to manage all aspects of your changing landscape, and it makes programming and operation easy. All of these advanced features are packaged in a reliable controller designed for rugged use and long life. Seven grouped programs with up to eight start times each. Optional independent station control. Standard or looping program start times. All programs are selectable as irrigation, drip or non-irrigation. Automatic shutdown when open valves exceed the defined maximum flow. Optional programming using evapotranspiration (ET) value to automatically calculate run times based on weather conditions. Cycle+Soak™ by station allows total irrigation run time to be split into usable cycles, minimizing runoff.