This is a 4-pin, through-hole XH series JST male connector and wired female connector. The pins are spaced by 2.5mm.
We really like the solid locking feeling and high current rating on these small connectors. This connector can be used with Signal Lines or use it for power connections for other parts and Peripherals. Male and Female Connector comes as a set in the same pack. 26AWG Wire is used with female part of the connector, the whole length of the connector with wire comes as 300mm. The Male connector is PCB soldered.