HYDROS Control X2 is a small, general-purpose aquarium controller capable of performing all the main functions for your aquarium. Monitor temperature, leaks, and flow rates. Power equipment, control outlets, and more. Perfect as a standalone controller for a saltwater aquarium or freshwater planted tank. 
Specifications
Dimensions (LxWxH): 5″ x 2.7″ x 1.9″
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