Ultralink HDC-200RM delivers advanced power filtration for high definition results with improved picture quality in both detail and color saturation. Enhanced audio response with tighter bass and more detail in the high frequencies make this the product of choice for all your AC filtration needs. Our patented Active Surge ProcessorTM (ASP) technology continuously monitors for over- and under-voltage conditions, shutting down the HDC-200RM above 130V and below 85V, fully protecting connected components until the problem clears. When the voltage returns to safe operating levels, the HDC-200RM turns itself back on for continued protection.