The ip68 waterproof connectors can be used for both cable to cable (in-line) or cable to panel-mount connections.
LP20 series there are many poles can choose. Widely used in power and signal.
M20 connector is screw type IP68 waterproof electrical connector.The user can attach the wires to the connector by screw.
OL21 connector is a large sized plastic shell IP68 waterproof wire connector.The user can attach the wires to the connector by solering & screw.