Electrical Management System (EMS) helps to protect your RV against voltage fluctuations, power surges and incorrectly wired shore power which can cause sever and costly damage to RV appliances and electronics. Improved design features include: state-of-the-art microprocessors, all weather shield assembly, rugged pull handle, secure locking bracket, built-in scrolling digital display and a tough Lean® housing. Product Specs: Surge Protection: 3-Mode / 1,790J / 22,500A Ratings: 30A / 120V / 3,600W Operating Temperatures: -40C to +105C Product Dimensions with All Weather Shield Assembly Cover: 6" W x 18" H x 6 1/8" D *** This is replaced with the new EMS-PT30X.