HYDROS Control X4 is a powerful and robust aquarium controller capable of performing all essential functions needed to maintain a healthy aquarium without the need for extra expensive modules. Set up is quick and easy, making this ideal for both beginner and advanced hobbyists. Just one Control X4 can monitor temperature, pH, ORP, and water level, to name a few, and control pumps, timers, level sensors, and much more thanks to its technologically advanced design. It can be used as a standalone controller for saltwater aquariums, freshwater tanks, pond applications, or it can be added to other HYDROS Controls to build a more extensive system. The Control X4 operates on a HYDROS Safety Net and is rated IP65 to keep your equipment and aquatic life alive and thriving. All HYDROS products are engineered, assembled, and supported in the USA.