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.

The Sense Port is a new concept in aquarium parameter measurement. HYDROS devices include several Sense Ports. A Sense Port is a generic input port that can accept data from numerous different types of sensors.

Sense Ports currently support:

• Temperature probes
• Optical level sensors (single and dual)
• Capacitive non-contact liquid level sensors
• Rope leak detectors
• Point leak detectors
• Flow rate sensors
• Magnetic switches
• Push-button switches

The Drive Ports provide switched 12V DC power for running small lights, motors, pumps, fans, and other accessories. The exact current being supplied by each port is continuously monitored by the Control, so if a motor or pump quits drawing current or draws too much, you will be immediately notified.

Accessories currently supported include:

• Auto Top-Off (ATO) pumps
• Cooling fans
• Cabinet LED lights
• Solenoids to control reverse osmosis systems

One of the most remarkable ports on the HYDROS Control X4 is the Probe Port. You can connect an ORP or a pH probe to the Probe Port but, this is no ordinary pH input! The circuitry is based on an ultra-high-quality input chip specifically designed for these types of probes. Each pH input provides digital galvanic isolation from the rest of the system. Galvanic isolation prevents interference with other accessories connected to the system like motors and pumps. Digital Galvanic isolation preserves the accuracy of the measurement by converting the signal to a digital domain before crossing the isolation threshold.

The HYDROS Control X4 has 0-10V I/O (input and output) ports that allow it to control and receive commands from other HYDROS devices and accessories from other brands. A legacy automation system can provide input via the 0-10V Ports. They can control variable speed pumps and can also be used to monitor simple switch closures, like push buttons or float switches.

The HYDROS Command Bus is used to power the Control as well as communicate with other HYDROS devices for the ultimate failsafe.