Cigarette Lighter Socket to Barrel Connector Adapter.
Cigarette lighter female socket to 5.5 x 2.5mm or 5.5 x 2.1mm female jack.
This cable one end is a cigarette lighter female connector like you see in most vehicles, another end is a female jack, with 5.5mm outside diameter and 2.5mm insider diameter. It can change a 5.5x2.5mm male barrel connector into a car cigarette lighter socket like this:Caution:
This adapter is just a cable, it does not
have any electronic circuit inside to control electronic
voltage/current/polarity. Please make sure the power source output is
set correctly for your device.
The package also includes a 5.5x2.1mm adapter
that can change the 5.5x2.5mm female jack to 5.5 x2.1mm jack: