Setting a new standard in battery operated controllers, the HRC 990 is the answer to those difficult situations when installing burial wire is not possible or desired. 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 990ÃƒÂ¢Ã¢šÂ¬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 easyÃƒÂ¢Ã¢šÂ¬Ã¢â‚¬Âjust plug and go. Add up to four valves, moisture or rain/freeze sensor, and/or solar power module, all without the use of tools and without the hassle.