The SeaLink 12 volt family of products are manufactured from corrosion resistant marine grade materials. Exclusive to SeaLink products is a unique interconnecting system that securely locks the plug into the receptacle resulting in a positive and moisture-proof connection. The plug and receptacle feature optimized metal connection points for maximum conductivity. Watertight sealing cap Easy to install with locking ring for rear access installation Compatible with standard 12V plugs No mounting plate