Brand New Mains Linear AC-DC Adaptor Power Supply Transformer for your Item as listed in the Title. This Adaptor is Unregulated Voltage which means the voltage starts high and comes down to 12V once 500mA of load is added. Commonly used for Charging 12V Batteries. Also used to replace 13V, 14V, 15V original adaptors. Connector Size 5.5mm x 2.1mm (if you need a different size, please contact us) The Technical Specifications are as follows - Input: 240V 50Hz Output: 12V DC 500mA UK Plug CE Certified.