HYDROS Control X10The Ultimate Hydros System Controller Dose Liquids, Monitor Temperature, Track pH ORP Four Dosing Pumps Built In Manage up to 8 Hydros WiFi Devices Easily Expand w Optional Probes and Accessories The Control X10 is the ultimate Hydros system controller with twin Drive ports, four Sense ports, a pH ORP port, a Salinity probe port, four stepper dosing motors, and the ability to control up to eight WiFi devices all integrated into one compact IP 65 rated