Monster MP PRO 5100 12-Outlet Power Center with Stage 4 Clean Power (Discontinued by Manufacturer) Clean Power Stage 4 v2.0. application specific filters reject AC power pollution Tri-Mode circuitry provides the most comprehensive power surge protection available Digital volt and amp meters measure AC power fluctuations Fully programmable AC power turn-on and turn-off for equipment and overload protection One piece Dimensions: 5.75" H x 19.00" W x 14.50" D; weight: 23.90 lbs Clean Power Stage 4 v2.0. application specific filters reject AC power pollution. Tri-Mode circuitry provides the most comprehensive power surge protection available. Digital Volt and Amp meters measure AC power fluctuations. Sequenced AC power turn-on and turn-off for equipment and overload protection.