RainSafe RSMAXICOM Controller Enclosure Assembly - The RainSafe™ Controller Enclosure Assembly offers complete protection for your valuable irrigation control system. The system is available with many pre-wired options, including a master valve relay suitable for two controllers, a pump start relay and a bypass assembly for moisture sensors, rain check devices or radio remote control. When you specify the controller model(s) you want along with the electrical options, Horizon will build a complete, ready-to-install system customized to your exact specifications