Series Controller W900 incorporates programming to provide complete control of chemical-metering pumps and valves in water treatment applications. With icon-based programming on the large touchscreen display, the controller can be configured to control multiple outputs using one of many pre-engineered algorithms. Four I/O slots permit flexibility to utilize almost any type of sensor, including pH/ORP, conductivity, disinfection, fluorescence, temperature, level and flow. Internet connectivity lets the user maintain control via remote access.