4-Pin JST XH Relimate Connector (RMC), Male-Female Pair with Wire

Stepping up from the 2-pin version, this 4-pin relimate connector pair lets a project bundle four separate wires, such as power, ground, and two signal lines, into a single detachable plug rather than four individual connectors. That is useful for connecting a sensor module, a small daughter board, or a motor driver stage that needs several lines at once, while still keeping the connection serviceable and impossible to plug in with the wrong polarity thanks to the housing's keyed shape.