Progressive Industries Portable Electrical Management Systems (EMS) offer quick and easy RV electrical protection. $310 on the Progressive site and $249 on Amazon. Asking $200 plus shipping if not in North Dallas. Used for four months. Like new.
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A true plug-and-play application with no installation required. You will feel secure with multi-mode surge, voltage, polarity, and lost/open neutral protection. Each unit includes a digital display, scrolling continuously through the power source information: voltage(s), current frequency, error code, and previous error code (if applicable). Additionally, the computer is driven by state of the art microprocessors.