MC4 Connector set to match your solar panel that already has these connections, Or simply to use these for any existing panel where MC4 connectors are not already used. Waterproof, sealed connection with snap free feature. You will need x1 set of these per panel if you already have MC4 connectors on a panel. If no MC4 connectors on panel, you will need x2 sets per panel (x1 per panel, x1 per wiring).
We have included a picture showing NC4 connectors used on a panel.