This cable's 2-pin female JST connector has five-inch wires attached (red and black, twisted). It can connect to many boards we carry that have a two-pin JST connector for various purposes.
Note that this cable has a connector on one end only. The wires on the other end are left for you to crimp on a connector of your choice or to strip and solder onto your device.
For example, many boards have a 2-pin JST connector for battery power input, so you can use this cable to make a connection to a battery that doesn't have the right connector, or to a wall-mount supply. For the latter, you can solder the wire ends of this cable to a barrel connector or simply screw them into a barrel-to-screw-terminal adapter.
The wire gauge is 24 AWG.
JST Connector Datasheet