The PL-PLUS DMC Line Conditioner brings together superior protection and outstanding performance in a sturdy rack-mountable design. The Classic Series features Furman's revolutionary Series Multi-Stage Protection (SMP) Linear Filtering Technology (LiFT) and Extreme Voltage Shutdown (EVS). Together these technologies comprise what is without question one of the world's most advanced and comprehensive transient voltage surge suppressors. Large digital voltmeter / ammeter with discrete dimmer button displays line voltage and true RMS current draw.