Comes with MC-4 connector Our string PV connection box is compatible with brands of solar panels with solar connections on the market Our string PV connection box is compatible with brands of solar panels with solar connections on the market Our string PV connection box is compatible with brands of solar panels with solar connections on the market Our string PV connection box is compatible with brands of solar panels with solar connections on the market suitable for photovoltaic grid systems and solar power generation systems of off-grid solar systems suitable for photovoltaic grid systems and solar power generation systems of off-grid solar systems Commonly used in household photovoltaic systems, cars, RVs and yacht solar systems Commonly used in household photovoltaic systems, cars, RVs and yacht solar systems Commonly used in household photovoltaic systems, cars, RVs and yacht solar systems which can visually check the status of the main switch and lightning protection which can visually check the status of the main switch and lightning protection which can visually check the status of the main switch and lightning protection