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This MC4 connectors upgrade waterproof degree to IP67
Special design for stronger two plug pins on male connectors,it will not easy disconnect without mc4 disconnect tool
This MC4 connectors body made by professional photovoltaic plastic material for anti-aging and resistance to ultraviolet radiation
This MC4 metal pins 100% use tined copper,it will more Safety and more durable
This MC4 connectors with TUV certification and reach 25 years outdoor service life standard