Raritan Reverse Polarity Alarm [RPA] Marine Navigation & Instruments | GPS - Fishfinder Combos accepts 1/2" and M12 ring

accepts 1/2" and M12 ring terminals

Very high efficiency for faster charging of the batteries

Great for waterline cleaning from inside the vessel and scraping ice from windshields

and your RV will be left with a glossy finish

Raritan Reverse Polarity Alarm [RPA] Marine Navigation & Instruments | GPS - Fishfinder Combos accepts 1/2" and M12 ringReverse Polarity Alarm An essential aid for traveling boaters when connecting to unfamiliar dockside power. The quality of marina wiring can vary greatly from place to place and from plug to plug. That is why most boats designed to plug into shore power have a polarity indicator. It is usually a warning light on the AC electrical panel, although it can also be an audible alarm. It is an important safety feature that few boat owners fully understand or