The WLC-9000 from Waterline Controls is a water level control system that uses low-amplitude signals on multiple sensor probes of differing lengths that allow the user to intuitively set up automated control switches at various water heights. Each probe has a frequency separate from all other probes in the array and independently changes state when touched by water. It performs water level control functions, including duplex pump down and high level alarm by actuating pumps with very low power consumption. The signal strength of the sensor probes is not sufficient to cause fouling, degradation, or deterioration of the sensors no matter the water quality. Sensor cleaning requirements are minimal or eliminated. Multiple switch controls are built into a small package while providing application-specific functionality. 888-905-1892; www.waterlinecontrols.com.