Panel mount GX12 plug connectors are sold as pairs. This is a robust metal connector which can be used for power or signal.

Panel mount GX16 aviation electrical connectors are sold as pairs. This is a robust metal connector which can be used for power or signal.

FP20 series there are many poles can choose. Widely used in power and signal.

LP20 series there are many poles can choose. Widely used in power and signal.

FP20 series there are many poles can choose. Widely used in power and signal.

OL13 series connector can instead of SP13/SD13. There are many poles can be chosen. And you can also choose wire to wire or wire to board.

LP20 series there are many poles can choose. Widely used in power and signal.