HRC 990 is tough enough for installation in a below ground, valve box environment while providing years of no hassle, reliable service. Never before has there been a product that is designed to stand up to such a rugged environment and yet be so easy to use. HRC 990’s plug-in controller programming pod allows you the luxury of removing the pod from its water tight housing for the convenience of finger tip, out-of-the-valve-box programming. Installation is fast and easy—just plug and go. Add up to four valves, moisture sensor, rain/freeze sensor, and/or solar power module, all without the use of tools and without the hassle.