Hunter ICM400 4 Station Module For ICC Controller - Irrigation controllers are sometimes called irrigation timers. Hunter's lineup offers an array of user-friendly features and smart controller water-saving options built to fit any landscape irrigation system. The modular design of the Pro-C®, HPC, ICC2, I-Core®, ACC, and ACC2 controllers sets yet another industry standard for easy-to-use and expandable automatic irrigation controllers. Hydrawise and Centralus-enabled controllers offer predictive water management features and access from anywhere in the world.