Universal AC/DC Power Supply Adaptor Plug Charger 3V 4.5V 6V 7.5V 9V 12V UK
Irreversible polarity: All the DC Plug for this DC adapter are Center Positive: inner positive(+), outer negative(-). The DC power adapter is not compatible with all devices. Cord Output: 12V 3A. Type: AC to DC Multi Pin Adapter.