The OS 250 detects spills and leaks before they cause a problem. As few as three drops of liquid will cause the OS 250 to react. The system consists of a moisture sensing mat, a material specially developed for detecting liquid spills. A simple connection between the mat and the OS 250 Controller will sound an audible alarm, flash an LED, and will turn off the power of any device plugged into the single outlet, solid state power controller. The switched power outlet can control up to eight amps.