HYDROS Control X4
Experience the thrill of total control with Control X4 – the ultimate aquarium assistant and automation hub.
Use for saltwater aquariums, freshwater tanks, or even pond applications, this powerful controller is capable of performing all essential functions needed to maintain a healthy aquarium without the need for extra expensive modules. 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. 
Specifications
Dimensions (LxWxH): 7.8″ x 3.6″ x 2.5″
A fast dual-core 32-bit processor that allows control decisions to be made within each device
Internal health monitoring to report voltages, currents, CPU status, and the internal temperature of each device