Specifications:Name: Adjustable Power AdapterColor: Mainly blackInput: AC100-240V 50/60HzOuput: DC 3-12V / 1-24V / 9-24V 24-36V2A adjustableOutput current: 2A / 1APower: 36w 48w 72w Total cable length: 200cmEfficiency: 95%Size: 118*50*31mmFeatures:-Fully tested-Constructed from high quality material-Easy installation-Manufactured with precision to meet OE standards-High quality components-Application: Can used for DC motor speed control, light dimmer, and so on.

http://olla.gr/9v-24v-1a-ac-to-dc-adjustable-voltage-power-adapter-universal-power-supply-display-screen-power-switching-charger-plug-type-us/